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5 Benefits of Learning Through the Case Study Method
- 28 Nov 2023
While several factors make HBS Online unique —including a global Community and real-world outcomes —active learning through the case study method rises to the top.
In a 2023 City Square Associates survey, 74 percent of HBS Online learners who also took a course from another provider said HBS Online’s case method and real-world examples were better by comparison.
Here’s a primer on the case method, five benefits you could gain, and how to experience it for yourself.
Access your free e-book today.
What Is the Harvard Business School Case Study Method?
The case study method , or case method , is a learning technique in which you’re presented with a real-world business challenge and asked how you’d solve it. After working through it yourself and with peers, you’re told how the scenario played out.
HBS pioneered the case method in 1922. Shortly before, in 1921, the first case was written.
“How do you go into an ambiguous situation and get to the bottom of it?” says HBS Professor Jan Rivkin, former senior associate dean and chair of HBS's master of business administration (MBA) program, in a video about the case method . “That skill—the skill of figuring out a course of inquiry to choose a course of action—that skill is as relevant today as it was in 1921.”
Originally developed for the in-person MBA classroom, HBS Online adapted the case method into an engaging, interactive online learning experience in 2014.
In HBS Online courses , you learn about each case from the business professional who experienced it. After reviewing their videos, you’re prompted to take their perspective and explain how you’d handle their situation.
You then get to read peers’ responses, “star” them, and comment to further the discussion. Afterward, you learn how the professional handled it and their key takeaways.
Learn more about HBS Online's approach to the case method in the video below, and subscribe to our YouTube channel for more.
HBS Online’s adaptation of the case method incorporates the famed HBS “cold call,” in which you’re called on at random to make a decision without time to prepare.
“Learning came to life!” said Sheneka Balogun , chief administration officer and chief of staff at LeMoyne-Owen College, of her experience taking the Credential of Readiness (CORe) program . “The videos from the professors, the interactive cold calls where you were randomly selected to participate, and the case studies that enhanced and often captured the essence of objectives and learning goals were all embedded in each module. This made learning fun, engaging, and student-friendly.”
If you’re considering taking a course that leverages the case study method, here are five benefits you could experience.
5 Benefits of Learning Through Case Studies
1. take new perspectives.
The case method prompts you to consider a scenario from another person’s perspective. To work through the situation and come up with a solution, you must consider their circumstances, limitations, risk tolerance, stakeholders, resources, and potential consequences to assess how to respond.
Taking on new perspectives not only can help you navigate your own challenges but also others’. Putting yourself in someone else’s situation to understand their motivations and needs can go a long way when collaborating with stakeholders.
2. Hone Your Decision-Making Skills
Another skill you can build is the ability to make decisions effectively . The case study method forces you to use limited information to decide how to handle a problem—just like in the real world.
Throughout your career, you’ll need to make difficult decisions with incomplete or imperfect information—and sometimes, you won’t feel qualified to do so. Learning through the case method allows you to practice this skill in a low-stakes environment. When facing a real challenge, you’ll be better prepared to think quickly, collaborate with others, and present and defend your solution.
3. Become More Open-Minded
As you collaborate with peers on responses, it becomes clear that not everyone solves problems the same way. Exposing yourself to various approaches and perspectives can help you become a more open-minded professional.
When you’re part of a diverse group of learners from around the world, your experiences, cultures, and backgrounds contribute to a range of opinions on each case.
On the HBS Online course platform, you’re prompted to view and comment on others’ responses, and discussion is encouraged. This practice of considering others’ perspectives can make you more receptive in your career.
“You’d be surprised at how much you can learn from your peers,” said Ratnaditya Jonnalagadda , a software engineer who took CORe.
In addition to interacting with peers in the course platform, Jonnalagadda was part of the HBS Online Community , where he networked with other professionals and continued discussions sparked by course content.
“You get to understand your peers better, and students share examples of businesses implementing a concept from a module you just learned,” Jonnalagadda said. “It’s a very good way to cement the concepts in one's mind.”
4. Enhance Your Curiosity
One byproduct of taking on different perspectives is that it enables you to picture yourself in various roles, industries, and business functions.
“Each case offers an opportunity for students to see what resonates with them, what excites them, what bores them, which role they could imagine inhabiting in their careers,” says former HBS Dean Nitin Nohria in the Harvard Business Review . “Cases stimulate curiosity about the range of opportunities in the world and the many ways that students can make a difference as leaders.”
Through the case method, you can “try on” roles you may not have considered and feel more prepared to change or advance your career .
5. Build Your Self-Confidence
Finally, learning through the case study method can build your confidence. Each time you assume a business leader’s perspective, aim to solve a new challenge, and express and defend your opinions and decisions to peers, you prepare to do the same in your career.
According to a 2022 City Square Associates survey , 84 percent of HBS Online learners report feeling more confident making business decisions after taking a course.
“Self-confidence is difficult to teach or coach, but the case study method seems to instill it in people,” Nohria says in the Harvard Business Review . “There may well be other ways of learning these meta-skills, such as the repeated experience gained through practice or guidance from a gifted coach. However, under the direction of a masterful teacher, the case method can engage students and help them develop powerful meta-skills like no other form of teaching.”
How to Experience the Case Study Method
If the case method seems like a good fit for your learning style, experience it for yourself by taking an HBS Online course. Offerings span eight subject areas, including:
- Business essentials
- Leadership and management
- Entrepreneurship and innovation
- Digital transformation
- Finance and accounting
- Business in society
No matter which course or credential program you choose, you’ll examine case studies from real business professionals, work through their challenges alongside peers, and gain valuable insights to apply to your career.
Are you interested in discovering how HBS Online can help advance your career? Explore our course catalog and download our free guide —complete with interactive workbook sections—to determine if online learning is right for you and which course to take.
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What the Case Study Method Really Teaches
- Nitin Nohria
Seven meta-skills that stick even if the cases fade from memory.
It’s been 100 years since Harvard Business School began using the case study method. Beyond teaching specific subject matter, the case study method excels in instilling meta-skills in students. This article explains the importance of seven such skills: preparation, discernment, bias recognition, judgement, collaboration, curiosity, and self-confidence.
During my decade as dean of Harvard Business School, I spent hundreds of hours talking with our alumni. To enliven these conversations, I relied on a favorite question: “What was the most important thing you learned from your time in our MBA program?”
- Nitin Nohria is the George F. Baker Jr. and Distinguished Service University Professor. He served as the 10th dean of Harvard Business School, from 2010 to 2020.
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Case Method Teaching and Learning
What is the case method? How can the case method be used to engage learners? What are some strategies for getting started? This guide helps instructors answer these questions by providing an overview of the case method while highlighting learner-centered and digitally-enhanced approaches to teaching with the case method. The guide also offers tips to instructors as they get started with the case method and additional references and resources.
On this page:
What is case method teaching.
- Case Method at Columbia
Why use the Case Method?
Case method teaching approaches, how do i get started.
- Additional Resources
The CTL is here to help!
For support with implementing a case method approach in your course, email [email protected] to schedule your 1-1 consultation .
Cite this resource: Columbia Center for Teaching and Learning (2019). Case Method Teaching and Learning. Columbia University. Retrieved from [today’s date] from https://ctl.columbia.edu/resources-and-technology/resources/case-method/
Case method 1 teaching is an active form of instruction that focuses on a case and involves students learning by doing 2 3 . Cases are real or invented stories 4 that include “an educational message” or recount events, problems, dilemmas, theoretical or conceptual issue that requires analysis and/or decision-making.
Case-based teaching simulates real world situations and asks students to actively grapple with complex problems 5 6 This method of instruction is used across disciplines to promote learning, and is common in law, business, medicine, among other fields. See Table 1 below for a few types of cases and the learning they promote.
Table 1: Types of cases and the learning they promote.
Type of Case | Description | Promoted Learning |
---|---|---|
Directed case | Presents a scenario that is followed by discussion using a set of “directed” / close-ended questions that can be answered from course material. | Understanding of fundamental concepts, principles, and facts |
Dilemma or decision case | Presents an individual, institution, or community faced with a problem that must be solved. Students may be presented with actual historical outcomes after they work through the case. | Problem solving and decision-making skills |
Interrupted case | Presents a problem for students to solve in a progressive disclosure format. Students are given the case in parts that they work on and make decisions about before moving on to the next part. | Problem solving skills |
Analysis or issue case | Focuses on answering questions and analyzing the situation presented. This can include “retrospective” cases that tell a story and its outcomes and have students analyze what happened and why alternative solutions were not taken. | Analysis skills |
For a more complete list, see Case Types & Teaching Methods: A Classification Scheme from the National Center for Case Study Teaching in Science.
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Case Method Teaching and Learning at Columbia
The case method is actively used in classrooms across Columbia, at the Morningside campus in the School of International and Public Affairs (SIPA), the School of Business, Arts and Sciences, among others, and at Columbia University Irving Medical campus.
Faculty Spotlight:
Professor Mary Ann Price on Using Case Study Method to Place Pre-Med Students in Real-Life Scenarios
Read more
Professor De Pinho on Using the Case Method in the Mailman Core
Case method teaching has been found to improve student learning, to increase students’ perception of learning gains, and to meet learning objectives 8 9 . Faculty have noted the instructional benefits of cases including greater student engagement in their learning 10 , deeper student understanding of concepts, stronger critical thinking skills, and an ability to make connections across content areas and view an issue from multiple perspectives 11 .
Through case-based learning, students are the ones asking questions about the case, doing the problem-solving, interacting with and learning from their peers, “unpacking” the case, analyzing the case, and summarizing the case. They learn how to work with limited information and ambiguity, think in professional or disciplinary ways, and ask themselves “what would I do if I were in this specific situation?”
The case method bridges theory to practice, and promotes the development of skills including: communication, active listening, critical thinking, decision-making, and metacognitive skills 12 , as students apply course content knowledge, reflect on what they know and their approach to analyzing, and make sense of a case.
Though the case method has historical roots as an instructor-centered approach that uses the Socratic dialogue and cold-calling, it is possible to take a more learner-centered approach in which students take on roles and tasks traditionally left to the instructor.
Cases are often used as “vehicles for classroom discussion” 13 . Students should be encouraged to take ownership of their learning from a case. Discussion-based approaches engage students in thinking and communicating about a case. Instructors can set up a case activity in which students are the ones doing the work of “asking questions, summarizing content, generating hypotheses, proposing theories, or offering critical analyses” 14 .
The role of the instructor is to share a case or ask students to share or create a case to use in class, set expectations, provide instructions, and assign students roles in the discussion. Student roles in a case discussion can include:
- discussion “starters” get the conversation started with a question or posing the questions that their peers came up with;
- facilitators listen actively, validate the contributions of peers, ask follow-up questions, draw connections, refocus the conversation as needed;
- recorders take-notes of the main points of the discussion, record on the board, upload to CourseWorks, or type and project on the screen; and
- discussion “wrappers” lead a summary of the main points of the discussion.
Prior to the case discussion, instructors can model case analysis and the types of questions students should ask, co-create discussion guidelines with students, and ask for students to submit discussion questions. During the discussion, the instructor can keep time, intervene as necessary (however the students should be doing the talking), and pause the discussion for a debrief and to ask students to reflect on what and how they learned from the case activity.
Note: case discussions can be enhanced using technology. Live discussions can occur via video-conferencing (e.g., using Zoom ) or asynchronous discussions can occur using the Discussions tool in CourseWorks (Canvas) .
Table 2 includes a few interactive case method approaches. Regardless of the approach selected, it is important to create a learning environment in which students feel comfortable participating in a case activity and learning from one another. See below for tips on supporting student in how to learn from a case in the “getting started” section and how to create a supportive learning environment in the Guide for Inclusive Teaching at Columbia .
Table 2. Strategies for Engaging Students in Case-Based Learning
Strategy | Role of the Instructor | |||
---|---|---|---|---|
Debate or Trial | Develop critical thinking skills and encourage students to challenge their existing assumptions. | Structure (with guidelines) and facilitate a debate between two diametrically opposed views. Keep time and ask students to reflect on their experience. | Prepare to argue either side. Work in teams to develop and present arguments, and debrief the debate. | Work in teams and prepare an argument for conflicting sides of an issue. |
Role play or Public Hearing | Understand diverse points of view, promote creative thinking, and develop empathy. | Structure the role-play and facilitate the debrief. At the close of the activity, ask students to reflect on what they learned. | Play a role found in a case, understand the points of view of stakeholders involved. | Describe the points of view of every stakeholder involved. |
Jigsaw | Promote peer-to-peer learning, and get students to own their learning. | Form student groups, assign each group a piece of the case to study. Form new groups with an “expert” for each previous group. Facilitate a debrief. | Be responsible for learning and then teaching case material to peers. Develop expertise for part of the problem. | Facilitate case method materials for their peers. |
“Clicker case” / (ARS) | Gauge your students’ learning; get all students to respond to questions, and launch or enhance a case discussion. | Instructor presents a case in stages, punctuated with questions in Poll Everywhere that students respond to using a mobile device. | Respond to questions using a mobile device. Reflect on why they responded the way they did and discuss with peers seated next to them. | Articulate their understanding of a case components. |
Approaches to case teaching should be informed by course learning objectives, and can be adapted for small, large, hybrid, and online classes. Instructional technology can be used in various ways to deliver, facilitate, and assess the case method. For instance, an online module can be created in CourseWorks (Canvas) to structure the delivery of the case, allow students to work at their own pace, engage all learners, even those reluctant to speak up in class, and assess understanding of a case and student learning. Modules can include text, embedded media (e.g., using Panopto or Mediathread ) curated by the instructor, online discussion, and assessments. Students can be asked to read a case and/or watch a short video, respond to quiz questions and receive immediate feedback, post questions to a discussion, and share resources.
For more information about options for incorporating educational technology to your course, please contact your Learning Designer .
To ensure that students are learning from the case approach, ask them to pause and reflect on what and how they learned from the case. Time to reflect builds your students’ metacognition, and when these reflections are collected they provides you with insights about the effectiveness of your approach in promoting student learning.
Well designed case-based learning experiences: 1) motivate student involvement, 2) have students doing the work, 3) help students develop knowledge and skills, and 4) have students learning from each other.
Designing a case-based learning experience should center around the learning objectives for a course. The following points focus on intentional design.
Identify learning objectives, determine scope, and anticipate challenges.
- Why use the case method in your course? How will it promote student learning differently than other approaches?
- What are the learning objectives that need to be met by the case method? What knowledge should students apply and skills should they practice?
- What is the scope of the case? (a brief activity in a single class session to a semester-long case-based course; if new to case method, start small with a single case).
- What challenges do you anticipate (e.g., student preparation and prior experiences with case learning, discomfort with discussion, peer-to-peer learning, managing discussion) and how will you plan for these in your design?
- If you are asking students to use transferable skills for the case method (e.g., teamwork, digital literacy) make them explicit.
Determine how you will know if the learning objectives were met and develop a plan for evaluating the effectiveness of the case method to inform future case teaching.
- What assessments and criteria will you use to evaluate student work or participation in case discussion?
- How will you evaluate the effectiveness of the case method? What feedback will you collect from students?
- How might you leverage technology for assessment purposes? For example, could you quiz students about the case online before class, accept assignment submissions online, use audience response systems (e.g., PollEverywhere) for formative assessment during class?
Select an existing case, create your own, or encourage students to bring course-relevant cases, and prepare for its delivery
- Where will the case method fit into the course learning sequence?
- Is the case at the appropriate level of complexity? Is it inclusive, culturally relevant, and relatable to students?
- What materials and preparation will be needed to present the case to students? (e.g., readings, audiovisual materials, set up a module in CourseWorks).
Plan for the case discussion and an active role for students
- What will your role be in facilitating case-based learning? How will you model case analysis for your students? (e.g., present a short case and demo your approach and the process of case learning) (Davis, 2009).
- What discussion guidelines will you use that include your students’ input?
- How will you encourage students to ask and answer questions, summarize their work, take notes, and debrief the case?
- If students will be working in groups, how will groups form? What size will the groups be? What instructions will they be given? How will you ensure that everyone participates? What will they need to submit? Can technology be leveraged for any of these areas?
- Have you considered students of varied cognitive and physical abilities and how they might participate in the activities/discussions, including those that involve technology?
Student preparation and expectations
- How will you communicate about the case method approach to your students? When will you articulate the purpose of case-based learning and expectations of student engagement? What information about case-based learning and expectations will be included in the syllabus?
- What preparation and/or assignment(s) will students complete in order to learn from the case? (e.g., read the case prior to class, watch a case video prior to class, post to a CourseWorks discussion, submit a brief memo, complete a short writing assignment to check students’ understanding of a case, take on a specific role, prepare to present a critique during in-class discussion).
Andersen, E. and Schiano, B. (2014). Teaching with Cases: A Practical Guide . Harvard Business Press.
Bonney, K. M. (2015). Case Study Teaching Method Improves Student Performance and Perceptions of Learning Gains†. Journal of Microbiology & Biology Education , 16 (1), 21–28. https://doi.org/10.1128/jmbe.v16i1.846
Davis, B.G. (2009). Chapter 24: Case Studies. In Tools for Teaching. Second Edition. Jossey-Bass.
Garvin, D.A. (2003). Making the Case: Professional Education for the world of practice. Harvard Magazine. September-October 2003, Volume 106, Number 1, 56-107.
Golich, V.L. (2000). The ABCs of Case Teaching. International Studies Perspectives. 1, 11-29.
Golich, V.L.; Boyer, M; Franko, P.; and Lamy, S. (2000). The ABCs of Case Teaching. Pew Case Studies in International Affairs. Institute for the Study of Diplomacy.
Heath, J. (2015). Teaching & Writing Cases: A Practical Guide. The Case Center, UK.
Herreid, C.F. (2011). Case Study Teaching. New Directions for Teaching and Learning. No. 128, Winder 2011, 31 – 40.
Herreid, C.F. (2007). Start with a Story: The Case Study Method of Teaching College Science . National Science Teachers Association. Available as an ebook through Columbia Libraries.
Herreid, C.F. (2006). “Clicker” Cases: Introducing Case Study Teaching Into Large Classrooms. Journal of College Science Teaching. Oct 2006, 36(2). https://search.proquest.com/docview/200323718?pq-origsite=gscholar
Krain, M. (2016). Putting the Learning in Case Learning? The Effects of Case-Based Approaches on Student Knowledge, Attitudes, and Engagement. Journal on Excellence in College Teaching. 27(2), 131-153.
Lundberg, K.O. (Ed.). (2011). Our Digital Future: Boardrooms and Newsrooms. Knight Case Studies Initiative.
Popil, I. (2011). Promotion of critical thinking by using case studies as teaching method. Nurse Education Today, 31(2), 204–207. https://doi.org/10.1016/j.nedt.2010.06.002
Schiano, B. and Andersen, E. (2017). Teaching with Cases Online . Harvard Business Publishing.
Thistlethwaite, JE; Davies, D.; Ekeocha, S.; Kidd, J.M.; MacDougall, C.; Matthews, P.; Purkis, J.; Clay D. (2012). The effectiveness of case-based learning in health professional education: A BEME systematic review . Medical Teacher. 2012; 34(6): e421-44.
Yadav, A.; Lundeberg, M.; DeSchryver, M.; Dirkin, K.; Schiller, N.A.; Maier, K. and Herreid, C.F. (2007). Teaching Science with Case Studies: A National Survey of Faculty Perceptions of the Benefits and Challenges of Using Cases. Journal of College Science Teaching; Sept/Oct 2007; 37(1).
Weimer, M. (2013). Learner-Centered Teaching: Five Key Changes to Practice. Second Edition. Jossey-Bass.
Additional resources
Teaching with Cases , Harvard Kennedy School of Government.
Features “what is a teaching case?” video that defines a teaching case, and provides documents to help students prepare for case learning, Common case teaching challenges and solutions, tips for teaching with cases.
Promoting excellence and innovation in case method teaching: Teaching by the Case Method , Christensen Center for Teaching & Learning. Harvard Business School.
National Center for Case Study Teaching in Science . University of Buffalo.
A collection of peer-reviewed STEM cases to teach scientific concepts and content, promote process skills and critical thinking. The Center welcomes case submissions. Case classification scheme of case types and teaching methods:
- Different types of cases: analysis case, dilemma/decision case, directed case, interrupted case, clicker case, a flipped case, a laboratory case.
- Different types of teaching methods: problem-based learning, discussion, debate, intimate debate, public hearing, trial, jigsaw, role-play.
Columbia Resources
Resources available to support your use of case method: The University hosts a number of case collections including: the Case Consortium (a collection of free cases in the fields of journalism, public policy, public health, and other disciplines that include teaching and learning resources; SIPA’s Picker Case Collection (audiovisual case studies on public sector innovation, filmed around the world and involving SIPA student teams in producing the cases); and Columbia Business School CaseWorks , which develops teaching cases and materials for use in Columbia Business School classrooms.
Center for Teaching and Learning
The Center for Teaching and Learning (CTL) offers a variety of programs and services for instructors at Columbia. The CTL can provide customized support as you plan to use the case method approach through implementation. Schedule a one-on-one consultation.
Office of the Provost
The Hybrid Learning Course Redesign grant program from the Office of the Provost provides support for faculty who are developing innovative and technology-enhanced pedagogy and learning strategies in the classroom. In addition to funding, faculty awardees receive support from CTL staff as they redesign, deliver, and evaluate their hybrid courses.
The Start Small! Mini-Grant provides support to faculty who are interested in experimenting with one new pedagogical strategy or tool. Faculty awardees receive funds and CTL support for a one-semester period.
Explore our teaching resources.
- Blended Learning
- Contemplative Pedagogy
- Inclusive Teaching Guide
- FAQ for Teaching Assistants
- Metacognition
CTL resources and technology for you.
- Overview of all CTL Resources and Technology
- The origins of this method can be traced to Harvard University where in 1870 the Law School began using cases to teach students how to think like lawyers using real court decisions. This was followed by the Business School in 1920 (Garvin, 2003). These professional schools recognized that lecture mode of instruction was insufficient to teach critical professional skills, and that active learning would better prepare learners for their professional lives. ↩
- Golich, V.L. (2000). The ABCs of Case Teaching. International Studies Perspectives. 1, 11-29. ↩
- Herreid, C.F. (2007). Start with a Story: The Case Study Method of Teaching College Science . National Science Teachers Association. Available as an ebook through Columbia Libraries. ↩
- Davis, B.G. (2009). Chapter 24: Case Studies. In Tools for Teaching. Second Edition. Jossey-Bass. ↩
- Andersen, E. and Schiano, B. (2014). Teaching with Cases: A Practical Guide . Harvard Business Press. ↩
- Lundberg, K.O. (Ed.). (2011). Our Digital Future: Boardrooms and Newsrooms. Knight Case Studies Initiative. ↩
- Heath, J. (2015). Teaching & Writing Cases: A Practical Guide. The Case Center, UK. ↩
- Bonney, K. M. (2015). Case Study Teaching Method Improves Student Performance and Perceptions of Learning Gains†. Journal of Microbiology & Biology Education , 16 (1), 21–28. https://doi.org/10.1128/jmbe.v16i1.846 ↩
- Krain, M. (2016). Putting the Learning in Case Learning? The Effects of Case-Based Approaches on Student Knowledge, Attitudes, and Engagement. Journal on Excellence in College Teaching. 27(2), 131-153. ↩
- Thistlethwaite, JE; Davies, D.; Ekeocha, S.; Kidd, J.M.; MacDougall, C.; Matthews, P.; Purkis, J.; Clay D. (2012). The effectiveness of case-based learning in health professional education: A BEME systematic review . Medical Teacher. 2012; 34(6): e421-44. ↩
- Yadav, A.; Lundeberg, M.; DeSchryver, M.; Dirkin, K.; Schiller, N.A.; Maier, K. and Herreid, C.F. (2007). Teaching Science with Case Studies: A National Survey of Faculty Perceptions of the Benefits and Challenges of Using Cases. Journal of College Science Teaching; Sept/Oct 2007; 37(1). ↩
- Popil, I. (2011). Promotion of critical thinking by using case studies as teaching method. Nurse Education Today, 31(2), 204–207. https://doi.org/10.1016/j.nedt.2010.06.002 ↩
- Weimer, M. (2013). Learner-Centered Teaching: Five Key Changes to Practice. Second Edition. Jossey-Bass. ↩
- Herreid, C.F. (2006). “Clicker” Cases: Introducing Case Study Teaching Into Large Classrooms. Journal of College Science Teaching. Oct 2006, 36(2). https://search.proquest.com/docview/200323718?pq-origsite=gscholar ↩
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The Case Study Teaching Method
It is easy to get confused between the case study method and the case method , particularly as it applies to legal education. The case method in legal education was invented by Christopher Columbus Langdell, Dean of Harvard Law School from 1870 to 1895. Langdell conceived of a way to systematize and simplify legal education by focusing on previous case law that furthered principles or doctrines. To that end, Langdell wrote the first casebook, entitled A Selection of Cases on the Law of Contracts , a collection of settled cases that would illuminate the current state of contract law. Students read the cases and came prepared to analyze them during Socratic question-and-answer sessions in class.
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The Harvard Business School case study approach grew out of the Langdellian method. But instead of using established case law, business professors chose real-life examples from the business world to highlight and analyze business principles. HBS-style case studies typically consist of a short narrative (less than 25 pages), told from the point of view of a manager or business leader embroiled in a dilemma. Case studies provide readers with an overview of the main issue; background on the institution, industry, and individuals involved; and the events that led to the problem or decision at hand. Cases are based on interviews or public sources; sometimes, case studies are disguised versions of actual events or composites based on the faculty authors’ experience and knowledge of the subject. Cases are used to illustrate a particular set of learning objectives; as in real life, rarely are there precise answers to the dilemma at hand.
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Our suite of free materials offers a great introduction to the case study method. We also offer review copies of our products free of charge to educators and staff at degree-granting institutions.
For more information on the case study teaching method, see:
- Martha Minow and Todd Rakoff: A Case for Another Case Method
- HLS Case Studies Blog: Legal Education’s 9 Big Ideas
- Teaching Units: Problem Solving , Advanced Problem Solving , Skills , Decision Making and Leadership , Professional Development for Law Firms , Professional Development for In-House Counsel
- Educator Community: Tips for Teachers
Watch this informative video about the Problem-Solving Workshop:
<< Previous: About Harvard Law School Case Studies | Next: Downloading Case Studies >>
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Center for Excellence in Teaching and Learning
- Case Based Learning
What is the case method?
In case-based learning, students learn to interact with and manipulate basic foundational knowledge by working with situations resembling specific real-world scenarios.
How does it work?
Case studies encourage students to use critical thinking skills to identify and narrow an issue, develop and evaluate alternatives, and offer a solution. In fact, Nkhoma (2016), who studied the value of developing case-based learning activities based on Bloom’s Taxonomy of thinking skills, suggests that this approach encourages deep learning through critical thinking:
Sherfield (2004) confirms this, asserting that working through case studies can begin to build and expand these six critical thinking strategies:
- Emotional restraint
- Questioning
- Distinguishing fact from fiction
- Searching for ambiguity
What makes a good case?
Case-based learning can focus on anything from a one-sentence physics word problem to a textbook-sized nursing case or a semester-long case in a law course. Though we often assume that a case is a “problem,” Ellet (2007) suggests that most cases entail one of four types of situations:
- Evaluations
- What are the facts you know about the case?
- What are some logical assumptions you can make about the case?
- What are the problems involved in the case as you see it?
- What is the root problem (the main issue)?
- What do you estimate is the cause of the root problem?
- What are the reasons that the root problem exists?
- What is the solution to the problem?
- Are there any moral or ethical considerations to your solution?
- What are the real-world implications for this case?
- How might the lives of the people in the case study be changed because of your proposed solution?
- Where in your world (campus/town/country) might a problem like this occur?
- Where could someone get help with this problem?
- What personal advice would you give to the person or people concerned?
Adapted from Sherfield’s Case Studies for the First Year (2004)
Some faculty buy prepared cases from publishers, but many create their own based on their unique course needs. When introducing case-based learning to students, be sure to offer a series of guidelines or questions to prompt deep thinking. One option is to provide a scenario followed by questions; for example, questions designed for a first year experience problem might include these:
Before you begin, take a look at what others are doing with cases in your field. Pre-made case studies are available from various publishers, and you can find case-study templates online.
- Choose scenarios carefully
- Tell a story from beginning to end, including many details
- Create real-life characters and use quotes when possible
- Write clearly and concisely and format the writing simply
- Ask students to reflect on their learning—perhaps identifying connections between the lesson and specific course learning outcomes—after working a case
Additional Resources
- Barnes, Louis B. et al. Teaching and the Case Method , 3 rd (1994). Harvard, 1994.
- Campoy, Renee. Case Study Analysis in the Classroom: Becoming a Reflective Teacher . Sage Publications, 2005.
- Ellet, William. The Case Study Handbook . Harvard, 2007.
- Herreid, Clyde Freeman, ed. Start with a Story: The Case Study Method of Teaching College Science . NSTA, 2007.
- Herreid, Clyde Freeman, et al. Science Stories: Using Case Studies to Teach Critical Thinking . NSTA, 2012.
- Nkhoma, M., Lam, et al. Developing case-based learning activities based on the revised Bloom’s Taxonomy . Proceedings of Informing Science & IT Education Conference (In SITE) 2016, 85-93. 2016.
- Rolls, Geoff. Classic Case Studies in Psychology , 3 rd Hodder Education, Bookpoint, 2014.
- Sherfield, Robert M., et al. Case Studies for the First Year . Pearson, 2004.
- Shulman, Judith H., ed. Case Methods in Teacher Education . Teacher’s College, 1992.
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What is the Case Study Method?
Simply put, the case method is a discussion of real-life situations that business executives have faced.
On average, you'll attend three to four different classes a day, for a total of about six hours of class time (schedules vary). To prepare, you'll work through problems with your peers.
How the Case Method Creates Value
Often, executives are surprised to discover that the objective of the case study is not to reach consensus, but to understand how different people use the same information to arrive at diverse conclusions. When you begin to understand the context, you can appreciate the reasons why those decisions were made. You can prepare for case discussions in several ways.
Case Discussion Preparation Details
In self-reflection.
The time you spend here is deeply introspective. You're not only working with case materials and assignments, but also taking on the role of the case protagonist—the person who's supposed to make those tough decisions. How would you react in those situations? We put people in a variety of contexts, and they start by addressing that specific problem.
In a small group setting
The discussion group is a critical component of the HBS experience. You're working in close quarters with a group of seven or eight very accomplished peers in diverse functions, industries, and geographies. Because they bring unique experience to play you begin to see that there are many different ways to wrestle with a problem—and that’s very enriching.
In the classroom
The faculty guides you in examining and resolving the issues—but the beauty here is that they don't provide you with the answers. You're interacting in the classroom with other executives—debating the issue, presenting new viewpoints, countering positions, and building on one another's ideas. And that leads to the next stage of learning.
Beyond the classroom
Once you leave the classroom, the learning continues and amplifies as you get to know people in different settings—over meals, at social gatherings, in the fitness center, or as you are walking to class. You begin to distill the takeaways that you want to bring back and apply in your organization to ensure that the decisions you make will create more value for your firm.
How Cases Unfold In the Classroom
Pioneered by HBS faculty, the case method puts you in the role of the chief decision maker as you explore the challenges facing leading companies across the globe. Learning to think fast on your feet with limited information sharpens your analytical skills and empowers you to make critical decisions in real time.
To get the most out of each case, it's important to read and reflect, and then meet with your discussion group to share your insights. You and your peers will explore the underlying issues, compare alternatives, and suggest various ways of resolving the problem.
How to Prepare for Case Discussions
There's more than one way to prepare for a case discussion, but these general guidelines can help you develop a method that works for you.
Preparation Guidelines
Read the professor's assignment or discussion questions.
The assignment and discussion questions help you focus on the key aspects of the case. Ask yourself: What are the most important issues being raised?
Read the first few paragraphs and then skim the case
Each case begins with a text description followed by exhibits. Ask yourself: What is the case generally about, and what information do I need to analyze?
Reread the case, underline text, and make margin notes
Put yourself in the shoes of the case protagonist, and own that person's problems. Ask yourself: What basic problem is this executive trying to resolve?
Note the key problems on a pad of paper and go through the case again
Sort out relevant considerations and do the quantitative or qualitative analysis. Ask yourself: What recommendations should I make based on my case data analysis?
Case Study Best Practices
The key to being an active listener and participant in case discussions—and to getting the most out of the learning experience—is thorough individual preparation.
We've set aside formal time for you to discuss the case with your group. These sessions will help you to become more confident about sharing your views in the classroom discussion.
Participate
Actively express your views and challenge others. Don't be afraid to share related "war stories" that will heighten the relevance and enrich the discussion.
If the content doesn't seem to relate to your business, don't tune out. You can learn a lot about marketing insurance from a case on marketing razor blades!
Actively apply what you're learning to your own specific management situations, both past and future. This will magnify the relevance to your business.
People with diverse backgrounds, experiences, skills, and styles will take away different things. Be sure to note what resonates with you, not your peers.
Being exposed to so many different approaches to a given situation will put you in a better position to enhance your management style.
Frequently Asked Questions
What can i expect on the first day, what happens in class if nobody talks, does everyone take part in "role-playing".
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Cases are narratives, situations, select data samplings, or statements that present unresolved and provocative issues, situations, or questions (Indiana University Teaching Handbook, 2005). The case method is a participatory, discussion-based way of learning where students gain skills in critical thinking, communication, and group dynamics. It is a type of problem-based learning . Often seen in the professional schools of medicine, law, and business, the case method is now used successfully in disciplines such as engineering, chemistry, education, and journalism. Students can work through a case during class as a whole or in small groups.
In addition to the definition above, the case method of teaching (or learning):
- Is a partnership between students and teacher as well as among students.
- Promotes more effective contextual learning and long-term retention.
- Involves trust that students will find the answers.
- Answers questions not only of “how” but “why.”
- Provides students the opportunity to “walk around the problem” and to see varied perspectives.
(Bruner, 2002, and Christensen, Garvin, and Sweet, 1991)
What is the value of the case method?
Bruner (1991) states that the case method:
- Is effective: It employs active learning, involves self-discovery where the teacher serves as facilitator.
- Builds the capacity for critical thinking: It uses questioning skills as modeled by the teacher and employs discussion and debates.
- Exercises an administrative point of view: Students must develop a framework for making decisions.
- Models a learning environment: It offers an exchange and flow of ideas from one person to another and achieves trust, respect, and risk-taking.
- Models the process of inductive learning-from-experience: It is valuable in promoting life-long learning. It also promotes more effective contextual learning and long-term retention.
- Mimics the real world: Decisions are sometimes based not on absolute values of right and wrong, but on relative values and uncertainty.
What are some ways to use the case method appropriately?
Choose an appropriate case
Cases can be any of the following (Indiana University Teaching Handbook, 2005):
- Finished cases based on facts; these are useful for purposes of analysis.
- Unfinished open-ended cases; where the results are not clear yet, so the student must predict, make suggestions, and conclusions.
- Fictional cases that the teacher writes; the difficulty is in writing these cases so they reflect a real-world situation.
- Original documents, such as the use of news articles, reports, data sets, ethnographies; an interesting case would be to provide two sides of a scenario.
Develop effective questions
Think about ways to start the discussion such as using a hypothetical example or employing the background knowledge of your students.
Get students prepared
To prepare for the next class ask students to think about the following questions:
- What is the problem or decision?
- Who is the key decision-maker?
- Who are the other people involved?
- What caused the problem?
- What are some underlying assumptions or objectives?
- What decision needs to be made?
- Are there alternative responses?
Set ground rules with your students
For effective class discussion suggest the following to your students:
- Carefully listen to the discussion, but do not wait too long to participate.
- Collaboration and respect should always be present.
- Provide value-added comments, suggestions, or questions. Strive to think of the class objective by keeping the discussion going toward constructive inquiry and solutions.
Other suggestions
- Try to refrain from being the “sage on the stage” or a monopolizer. If you are, students are merely absorbing and not engaging with the material in the way that the case method allows.
- Make sure the students have finished presenting their perspective before interjecting. Wait and check their body language before adding or changing the discussion.
- Take note of the progress and the content in the discussion. One way is by using the board or computer to structure the comments. Another way, particularly useful where there is a conflict or multiple alternatives, is the two-column method. In this method, the teacher makes two columns: “For and Against” or “Alternative A and Alternative B.” All arguments/comments are listed in the respective column before discussions or evaluations occur. Don't forget to note supportive evidence.
- In addition to the discussion method, you can also try debates, role-plays, and simulations as ways to uncover the lesson from the case.
- If you decide to grade participation, make sure that your grading system is an accurate and defensible portrayal of the contributions.
In conclusion, cases are a valuable way for learning to occur. It takes a fair amount of preparation by both the teacher and the students, but don't forget these benefits (Bruner, 2002):
- The teacher is learning as well as the students. Because of the interactive nature of this method, the teacher constantly “encounters fresh perspective on old problems or tests classic solutions to new problems.”
- The students are having fun, are motivated and engaged. If done well, the students are working collaboratively to support each other.
Where can I learn more?
- Case Studies, Center for Teaching, Vanderbilt University
- Case-based Teaching, Center for Research on Teaching and Learning, University of Michigan
- Barnes, L. B., Christensen, C. R., & Hansen, A. J. (1994). Teaching and the case method (3rd ed.). Boston: Harvard Business School Press.
- Boehrer, J., & Linsky, M. (1990). Teaching with cases: Learning to question. In M. D. Svinicki (Ed.), New Directions for Teaching and Learning: No. 42, The changing face of college teaching . San Francisco: Jossey-Bass.
- Bruner, R. (2002). Socrates' muse: Reflections on effective case discussion leadership . New York: McGraw-Hill.
- Christensen, C. R., Garvin, D. A., & Sweet, A. (Eds.). (1991). Education for judgment: The artistry of discussion leadership . Boston: Harvard Business School Press.
- Indiana University, Bloomington, Campus Instructional Consulting. (n.d.). Teaching with the case method. In Indiana University Teaching Handbook . Retrieved June 23, 2010, from http://www.teaching.iub.edu/wrapper_big.php?section_id=case
- Mitchell, T., & Rosenstiel, T. (2003). Background and tips for case study teaching . Retrieved June 23, 2010, from http://www.journalism.org/node/1757
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Using Case Studies to Teach
Why Use Cases?
Many students are more inductive than deductive reasoners, which means that they learn better from examples than from logical development starting with basic principles. The use of case studies can therefore be a very effective classroom technique.
Case studies are have long been used in business schools, law schools, medical schools and the social sciences, but they can be used in any discipline when instructors want students to explore how what they have learned applies to real world situations. Cases come in many formats, from a simple “What would you do in this situation?” question to a detailed description of a situation with accompanying data to analyze. Whether to use a simple scenario-type case or a complex detailed one depends on your course objectives.
Most case assignments require students to answer an open-ended question or develop a solution to an open-ended problem with multiple potential solutions. Requirements can range from a one-paragraph answer to a fully developed group action plan, proposal or decision.
Common Case Elements
Most “full-blown” cases have these common elements:
- A decision-maker who is grappling with some question or problem that needs to be solved.
- A description of the problem’s context (a law, an industry, a family).
- Supporting data, which can range from data tables to links to URLs, quoted statements or testimony, supporting documents, images, video, or audio.
Case assignments can be done individually or in teams so that the students can brainstorm solutions and share the work load.
The following discussion of this topic incorporates material presented by Robb Dixon of the School of Management and Rob Schadt of the School of Public Health at CEIT workshops. Professor Dixon also provided some written comments that the discussion incorporates.
Advantages to the use of case studies in class
A major advantage of teaching with case studies is that the students are actively engaged in figuring out the principles by abstracting from the examples. This develops their skills in:
- Problem solving
- Analytical tools, quantitative and/or qualitative, depending on the case
- Decision making in complex situations
- Coping with ambiguities
Guidelines for using case studies in class
In the most straightforward application, the presentation of the case study establishes a framework for analysis. It is helpful if the statement of the case provides enough information for the students to figure out solutions and then to identify how to apply those solutions in other similar situations. Instructors may choose to use several cases so that students can identify both the similarities and differences among the cases.
Depending on the course objectives, the instructor may encourage students to follow a systematic approach to their analysis. For example:
- What is the issue?
- What is the goal of the analysis?
- What is the context of the problem?
- What key facts should be considered?
- What alternatives are available to the decision-maker?
- What would you recommend — and why?
An innovative approach to case analysis might be to have students role-play the part of the people involved in the case. This not only actively engages students, but forces them to really understand the perspectives of the case characters. Videos or even field trips showing the venue in which the case is situated can help students to visualize the situation that they need to analyze.
Accompanying Readings
Case studies can be especially effective if they are paired with a reading assignment that introduces or explains a concept or analytical method that applies to the case. The amount of emphasis placed on the use of the reading during the case discussion depends on the complexity of the concept or method. If it is straightforward, the focus of the discussion can be placed on the use of the analytical results. If the method is more complex, the instructor may need to walk students through its application and the interpretation of the results.
Leading the Case Discussion and Evaluating Performance
Decision cases are more interesting than descriptive ones. In order to start the discussion in class, the instructor can start with an easy, noncontroversial question that all the students should be able to answer readily. However, some of the best case discussions start by forcing the students to take a stand. Some instructors will ask a student to do a formal “open” of the case, outlining his or her entire analysis. Others may choose to guide discussion with questions that move students from problem identification to solutions. A skilled instructor steers questions and discussion to keep the class on track and moving at a reasonable pace.
In order to motivate the students to complete the assignment before class as well as to stimulate attentiveness during the class, the instructor should grade the participation—quantity and especially quality—during the discussion of the case. This might be a simple check, check-plus, check-minus or zero. The instructor should involve as many students as possible. In order to engage all the students, the instructor can divide them into groups, give each group several minutes to discuss how to answer a question related to the case, and then ask a randomly selected person in each group to present the group’s answer and reasoning. Random selection can be accomplished through rolling of dice, shuffled index cards, each with one student’s name, a spinning wheel, etc.
Tips on the Penn State U. website: https://sites.psu.edu/pedagogicalpractices/case-studies/
If you are interested in using this technique in a science course, there is a good website on use of case studies in the sciences at the National Science Teaching Association.
Making Learning Relevant With Case Studies
The open-ended problems presented in case studies give students work that feels connected to their lives.
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To prepare students for jobs that haven’t been created yet, we need to teach them how to be great problem solvers so that they’ll be ready for anything. One way to do this is by teaching content and skills using real-world case studies, a learning model that’s focused on reflection during the problem-solving process. It’s similar to project-based learning, but PBL is more focused on students creating a product.
Case studies have been used for years by businesses, law and medical schools, physicians on rounds, and artists critiquing work. Like other forms of problem-based learning, case studies can be accessible for every age group, both in one subject and in interdisciplinary work.
You can get started with case studies by tackling relatable questions like these with your students:
- How can we limit food waste in the cafeteria?
- How can we get our school to recycle and compost waste? (Or, if you want to be more complex, how can our school reduce its carbon footprint?)
- How can we improve school attendance?
- How can we reduce the number of people who get sick at school during cold and flu season?
Addressing questions like these leads students to identify topics they need to learn more about. In researching the first question, for example, students may see that they need to research food chains and nutrition. Students often ask, reasonably, why they need to learn something, or when they’ll use their knowledge in the future. Learning is most successful for students when the content and skills they’re studying are relevant, and case studies offer one way to create that sense of relevance.
Teaching With Case Studies
Ultimately, a case study is simply an interesting problem with many correct answers. What does case study work look like in classrooms? Teachers generally start by having students read the case or watch a video that summarizes the case. Students then work in small groups or individually to solve the case study. Teachers set milestones defining what students should accomplish to help them manage their time.
During the case study learning process, student assessment of learning should be focused on reflection. Arthur L. Costa and Bena Kallick’s Learning and Leading With Habits of Mind gives several examples of what this reflection can look like in a classroom:
Journaling: At the end of each work period, have students write an entry summarizing what they worked on, what worked well, what didn’t, and why. Sentence starters and clear rubrics or guidelines will help students be successful. At the end of a case study project, as Costa and Kallick write, it’s helpful to have students “select significant learnings, envision how they could apply these learnings to future situations, and commit to an action plan to consciously modify their behaviors.”
Interviews: While working on a case study, students can interview each other about their progress and learning. Teachers can interview students individually or in small groups to assess their learning process and their progress.
Student discussion: Discussions can be unstructured—students can talk about what they worked on that day in a think-pair-share or as a full class—or structured, using Socratic seminars or fishbowl discussions. If your class is tackling a case study in small groups, create a second set of small groups with a representative from each of the case study groups so that the groups can share their learning.
4 Tips for Setting Up a Case Study
1. Identify a problem to investigate: This should be something accessible and relevant to students’ lives. The problem should also be challenging and complex enough to yield multiple solutions with many layers.
2. Give context: Think of this step as a movie preview or book summary. Hook the learners to help them understand just enough about the problem to want to learn more.
3. Have a clear rubric: Giving structure to your definition of quality group work and products will lead to stronger end products. You may be able to have your learners help build these definitions.
4. Provide structures for presenting solutions: The amount of scaffolding you build in depends on your students’ skill level and development. A case study product can be something like several pieces of evidence of students collaborating to solve the case study, and ultimately presenting their solution with a detailed slide deck or an essay—you can scaffold this by providing specified headings for the sections of the essay.
Problem-Based Teaching Resources
There are many high-quality, peer-reviewed resources that are open source and easily accessible online.
- The National Center for Case Study Teaching in Science at the University at Buffalo built an online collection of more than 800 cases that cover topics ranging from biochemistry to economics. There are resources for middle and high school students.
- Models of Excellence , a project maintained by EL Education and the Harvard Graduate School of Education, has examples of great problem- and project-based tasks—and corresponding exemplary student work—for grades pre-K to 12.
- The Interdisciplinary Journal of Problem-Based Learning at Purdue University is an open-source journal that publishes examples of problem-based learning in K–12 and post-secondary classrooms.
- The Tech Edvocate has a list of websites and tools related to problem-based learning.
In their book Problems as Possibilities , Linda Torp and Sara Sage write that at the elementary school level, students particularly appreciate how they feel that they are taken seriously when solving case studies. At the middle school level, “researchers stress the importance of relating middle school curriculum to issues of student concern and interest.” And high schoolers, they write, find the case study method “beneficial in preparing them for their future.”
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- 10 Jan 2018
8 Tips to Help You Prepare for the Case Method
Ninad Kulkarni just wrapped up the fall semester at HBS and wanted to share what he learned about the case method after his first few months in the classroom.
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Case-Based Learning
What is case-based learning.
Using a case-based approach engages students in discussion of specific scenarios that resemble or typically are real-world examples. This method is learner-centered with intense interaction between participants as they build their knowledge and work together as a group to examine the case. The instructor's role is that of a facilitator while the students collaboratively analyze and address problems and resolve questions that have no single right answer.
Clyde Freeman Herreid provides eleven basic rules for case-based learning.
- Tells a story.
- Focuses on an interest-arousing issue.
- Set in the past five years
- Creates empathy with the central characters.
- Includes quotations. There is no better way to understand a situation and to gain empathy for the characters
- Relevant to the reader.
- Must have pedagogic utility.
- Conflict provoking.
- Decision forcing.
- Has generality.
Why Use Case-Based Learning?
To provide students with a relevant opportunity to see theory in practice. Real world or authentic contexts expose students to viewpoints from multiple sources and see why people may want different outcomes. Students can also see how a decision will impact different participants, both positively and negatively.
To require students to analyze data in order to reach a conclusion. Since many assignments are open-ended, students can practice choosing appropriate analytic techniques as well. Instructors who use case-based learning say that their students are more engaged, interested, and involved in the class.
To develop analytic, communicative and collaborative skills along with content knowledge. In their effort to find solutions and reach decisions through discussion, students sort out factual data, apply analytic tools, articulate issues, reflect on their relevant experiences, and draw conclusions they can relate to new situations. In the process, they acquire substantive knowledge and develop analytic, collaborative, and communication skills.
Many faculty also use case studies in their curriculum to teach content, connect students with real life data, or provide opportunities for students to put themselves in the decision maker's shoes.
Teaching Strategies for Case-Based Learning
By bringing real world problems into student learning, cases invite active participation and innovative solutions to problems as they work together to reach a judgment, decision, recommendation, prediction or other concrete outcome.
The Campus Instructional Consulting unit at Indiana University has created a great resource for case-based learning. The following is from their website which we have permission to use.
Formats for Cases
- “Finished” cases based on facts: for analysis only, since the solution is indicated or alternate solutions are suggested.
- “Unfinished” open-ended cases: the results are not yet clear (either because the case has not come to a factual conclusion in real life, or because the instructor has eliminated the final facts.) Students must predict, make choices and offer suggestions that will affect the outcome.
- Fictional cases: entirely written by the instructor—can be open-ended or finished. Cautionary note: the case must be both complex enough to mimic reality, yet not have so many “red herrings” as to obscure the goal of the exercise.
- Original documents: news articles, reports with data and statistics, summaries, excerpts from historical writings, artifacts, literary passages, video and audio recordings, ethnographies, etc. With the right questions, these can become problem-solving opportunities. Comparison between two original documents related to the same topic or theme is a strong strategy for encouraging both analysis and synthesis. This gives the opportunity for presenting more than one side of an argument, making the conflicts more complex.
Managing a Case Assignment
- Design discussions for small groups. 3-6 students are an ideal group size for setting up a discussion on a case.
- Design the narrative or situation such that it requires participants to reach a judgment, decision, recommendation, prediction or other concrete outcome. If possible, require each group to reach a consensus on the decision requested.
- Structure the discussion. The instructor should provide a series of written questions to guide small group discussion. Pay careful attention to the sequencing of the questions. Early questions might ask participants to make observations about the facts of the case. Later questions could ask for comparisons, contrasts, and analyses of competing observations or hypotheses. Final questions might ask students to take a position on the matter. The purpose of these questions is to stimulate, guide or prod (but not dictate) participants’ observations and analyses. The questions should be impossible to answer with a simple yes or no.
- Debrief the discussion to compare group responses. Help the whole class interprets and understand the implications of their solutions.
- Allow groups to work without instructor interference. The instructor must be comfortable with ambiguity and with adopting the non-traditional roles of witness and resource, rather than authority.
Designing Case Study Questions
Cases can be more or less “directed” by the kinds of questions asked. These kinds of questions can be appended to any case, or could be a handout for participants unfamiliar with case studies on how to approach one.
- What is the situation—what do you actually know about it from reading the case? (Distinguishes between fact and assumptions under critical understanding)
- What issues are at stake? (Opportunity for linking to theoretical readings)
- What questions do you have—what information do you still need? Where/how could you find it?
- What problem(s) need to be solved? (Opportunity to discuss communication versus conflict, gaps between assumptions, sides of the argument)
- What are all the possible options? What are the pros/cons of each option?
- What are the underlying assumptions for [person X] in the case—where do you see them?
- What criteria should you use when choosing an option? What does that mean about your assumptions?
Managing Discussion and Debate Effectively
- Delay the problem-solving part until the rest of the discussion has had time to develop. Start with expository questions to clarify the facts, then move to analysis, and finally to evaluation, judgment, and recommendations.
- Shift points of view: “Now that we’ve seen it from [W’s] standpoint, what’s happening here from [Y’s] standpoint?” What evidence would support Y’s position? What are the dynamics between the two positions?
- Shift levels of abstraction: if the answer to the question above is “It’s just a bad situation for her,” quotations help: When [Y] says “_____,” what are her assumptions? Or seek more concrete explanations: Why does she hold this point of view?”
- Ask for benefits/disadvantages of a position; for all sides.
- Shift time frame— not just to “What’s next?” but also to “How could this situation have been different?” What could have been done earlier to head off this conflict and turn it into a productive conversation? Is it too late to fix this? What are possible leverage points for a more productive discussion? What good can come of the existing situation?
- Shift to another context: We see how a person who thinks X would see the situation. How would a person who thinks Y see it? We see what happened in the Johannesburg news, how could this be handled in [your town/province]? How might [insert person, organization] address this problem?
- Follow-up questions: “What do you mean by ___?” Or, “Could you clarify what you said about ___?” (even if it was a pretty clear statement—this gives students time for thinking, developing different views, and exploration in more depth). Or “How would you square that observation with what [name of person] pointed out?”
- Point out and acknowledge differences in discussion— “that’s an interesting difference from what Sam just said, Sarah. Let’s look at where the differences lie.” (let sides clarify their points before moving on).
Herreid, C. F. (2007). Start with a story: The case study method of teaching college science. NSTA Press.
- Online Articles
- Websites and Case Studies
Select Books available through the Queen's Library
Crosling, G. & Webb, G. (2002). Supporting Student Learning: Case Studies, Experience and Practice from Higher Education. London: Kogan Page
Edwards, H., Smith, B., & Webb, G. (Eds.) (2001). Lecturing: Case Studies, Experience and Practice. London: Kogan Page.
Ellington, H. & Earl, S. (1998). Using Games, Simulations and Interactive Case Studies. Birmingham: Staff and Educational Development Association
Wassermann, S. (1994). Introduction to Case Method Teaching: A Guide to the Galaxy. New York: Teachers College Press, Columbia University.
Bieron, J. & Dinan, F. (1999). Case Studies Across a Science Curriculum. Department of Chemistry and Biochemistry, Canisius College in Buffalo, NY.
Walters. M. R. (1999). Case-stimulated learning within endocrine physiology lectures: An approach applicable to other disciplines. Advances in Physiology Education, 276, 74-78.
Websites and Online Case Collections
The Center for Teaching Excellence at the University of Medicine and Dentistry in New Jersey offers a wide variety of references including 21 links to case repositories in the Health Sciences.
The National Center for Case Study Teaching in Science provides an award-winning library of over 410 cases and case materials while promoting the development and dissemination of innovative materials and sound educational practices for case teaching in the sciences.
Houghton and Mifflin provide an excellent resource for students including on analyzing and writing the case.
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The case study approach
Sarah crowe.
1 Division of Primary Care, The University of Nottingham, Nottingham, UK
Kathrin Cresswell
2 Centre for Population Health Sciences, The University of Edinburgh, Edinburgh, UK
Ann Robertson
3 School of Health in Social Science, The University of Edinburgh, Edinburgh, UK
Anthony Avery
Aziz sheikh.
The case study approach allows in-depth, multi-faceted explorations of complex issues in their real-life settings. The value of the case study approach is well recognised in the fields of business, law and policy, but somewhat less so in health services research. Based on our experiences of conducting several health-related case studies, we reflect on the different types of case study design, the specific research questions this approach can help answer, the data sources that tend to be used, and the particular advantages and disadvantages of employing this methodological approach. The paper concludes with key pointers to aid those designing and appraising proposals for conducting case study research, and a checklist to help readers assess the quality of case study reports.
Introduction
The case study approach is particularly useful to employ when there is a need to obtain an in-depth appreciation of an issue, event or phenomenon of interest, in its natural real-life context. Our aim in writing this piece is to provide insights into when to consider employing this approach and an overview of key methodological considerations in relation to the design, planning, analysis, interpretation and reporting of case studies.
The illustrative 'grand round', 'case report' and 'case series' have a long tradition in clinical practice and research. Presenting detailed critiques, typically of one or more patients, aims to provide insights into aspects of the clinical case and, in doing so, illustrate broader lessons that may be learnt. In research, the conceptually-related case study approach can be used, for example, to describe in detail a patient's episode of care, explore professional attitudes to and experiences of a new policy initiative or service development or more generally to 'investigate contemporary phenomena within its real-life context' [ 1 ]. Based on our experiences of conducting a range of case studies, we reflect on when to consider using this approach, discuss the key steps involved and illustrate, with examples, some of the practical challenges of attaining an in-depth understanding of a 'case' as an integrated whole. In keeping with previously published work, we acknowledge the importance of theory to underpin the design, selection, conduct and interpretation of case studies[ 2 ]. In so doing, we make passing reference to the different epistemological approaches used in case study research by key theoreticians and methodologists in this field of enquiry.
This paper is structured around the following main questions: What is a case study? What are case studies used for? How are case studies conducted? What are the potential pitfalls and how can these be avoided? We draw in particular on four of our own recently published examples of case studies (see Tables Tables1, 1 , ,2, 2 , ,3 3 and and4) 4 ) and those of others to illustrate our discussion[ 3 - 7 ].
Example of a case study investigating the reasons for differences in recruitment rates of minority ethnic people in asthma research[ 3 ]
Minority ethnic people experience considerably greater morbidity from asthma than the White majority population. Research has shown however that these minority ethnic populations are likely to be under-represented in research undertaken in the UK; there is comparatively less marginalisation in the US. |
To investigate approaches to bolster recruitment of South Asians into UK asthma studies through qualitative research with US and UK researchers, and UK community leaders. |
Single intrinsic case study |
Centred on the issue of recruitment of South Asian people with asthma. |
In-depth interviews were conducted with asthma researchers from the UK and US. A supplementary questionnaire was also provided to researchers. |
Framework approach. |
Barriers to ethnic minority recruitment were found to centre around: |
1. The attitudes of the researchers' towards inclusion: The majority of UK researchers interviewed were generally supportive of the idea of recruiting ethnically diverse participants but expressed major concerns about the practicalities of achieving this; in contrast, the US researchers appeared much more committed to the policy of inclusion. |
2. Stereotypes and prejudices: We found that some of the UK researchers' perceptions of ethnic minorities may have influenced their decisions on whether to approach individuals from particular ethnic groups. These stereotypes centred on issues to do with, amongst others, language barriers and lack of altruism. |
3. Demographic, political and socioeconomic contexts of the two countries: Researchers suggested that the demographic profile of ethnic minorities, their political engagement and the different configuration of the health services in the UK and the US may have contributed to differential rates. |
4. Above all, however, it appeared that the overriding importance of the US National Institute of Health's policy to mandate the inclusion of minority ethnic people (and women) had a major impact on shaping the attitudes and in turn the experiences of US researchers'; the absence of any similar mandate in the UK meant that UK-based researchers had not been forced to challenge their existing practices and they were hence unable to overcome any stereotypical/prejudicial attitudes through experiential learning. |
Example of a case study investigating the process of planning and implementing a service in Primary Care Organisations[ 4 ]
Health work forces globally are needing to reorganise and reconfigure in order to meet the challenges posed by the increased numbers of people living with long-term conditions in an efficient and sustainable manner. Through studying the introduction of General Practitioners with a Special Interest in respiratory disorders, this study aimed to provide insights into this important issue by focusing on community respiratory service development. |
To understand and compare the process of workforce change in respiratory services and the impact on patient experience (specifically in relation to the role of general practitioners with special interests) in a theoretically selected sample of Primary Care Organisations (PCOs), in order to derive models of good practice in planning and the implementation of a broad range of workforce issues. |
Multiple-case design of respiratory services in health regions in England and Wales. |
Four PCOs. |
Face-to-face and telephone interviews, e-mail discussions, local documents, patient diaries, news items identified from local and national websites, national workshop. |
Reading, coding and comparison progressed iteratively. |
1. In the screening phase of this study (which involved semi-structured telephone interviews with the person responsible for driving the reconfiguration of respiratory services in 30 PCOs), the barriers of financial deficit, organisational uncertainty, disengaged clinicians and contradictory policies proved insurmountable for many PCOs to developing sustainable services. A key rationale for PCO re-organisation in 2006 was to strengthen their commissioning function and those of clinicians through Practice-Based Commissioning. However, the turbulence, which surrounded reorganisation was found to have the opposite desired effect. |
2. Implementing workforce reconfiguration was strongly influenced by the negotiation and contest among local clinicians and managers about "ownership" of work and income. |
3. Despite the intention to make the commissioning system more transparent, personal relationships based on common professional interests, past work history, friendships and collegiality, remained as key drivers for sustainable innovation in service development. |
It was only possible to undertake in-depth work in a selective number of PCOs and, even within these selected PCOs, it was not possible to interview all informants of potential interest and/or obtain all relevant documents. This work was conducted in the early stages of a major NHS reorganisation in England and Wales and thus, events are likely to have continued to evolve beyond the study period; we therefore cannot claim to have seen any of the stories through to their conclusion. |
Example of a case study investigating the introduction of the electronic health records[ 5 ]
Healthcare systems globally are moving from paper-based record systems to electronic health record systems. In 2002, the NHS in England embarked on the most ambitious and expensive IT-based transformation in healthcare in history seeking to introduce electronic health records into all hospitals in England by 2010. |
To describe and evaluate the implementation and adoption of detailed electronic health records in secondary care in England and thereby provide formative feedback for local and national rollout of the NHS Care Records Service. |
A mixed methods, longitudinal, multi-site, socio-technical collective case study. |
Five NHS acute hospital and mental health Trusts that have been the focus of early implementation efforts. |
Semi-structured interviews, documentary data and field notes, observations and quantitative data. |
Qualitative data were analysed thematically using a socio-technical coding matrix, combined with additional themes that emerged from the data. |
1. Hospital electronic health record systems have developed and been implemented far more slowly than was originally envisioned. |
2. The top-down, government-led standardised approach needed to evolve to admit more variation and greater local choice for hospitals in order to support local service delivery. |
3. A range of adverse consequences were associated with the centrally negotiated contracts, which excluded the hospitals in question. |
4. The unrealistic, politically driven, timeline (implementation over 10 years) was found to be a major source of frustration for developers, implementers and healthcare managers and professionals alike. |
We were unable to access details of the contracts between government departments and the Local Service Providers responsible for delivering and implementing the software systems. This, in turn, made it difficult to develop a holistic understanding of some key issues impacting on the overall slow roll-out of the NHS Care Record Service. Early adopters may also have differed in important ways from NHS hospitals that planned to join the National Programme for Information Technology and implement the NHS Care Records Service at a later point in time. |
Example of a case study investigating the formal and informal ways students learn about patient safety[ 6 ]
There is a need to reduce the disease burden associated with iatrogenic harm and considering that healthcare education represents perhaps the most sustained patient safety initiative ever undertaken, it is important to develop a better appreciation of the ways in which undergraduate and newly qualified professionals receive and make sense of the education they receive. | |
---|---|
To investigate the formal and informal ways pre-registration students from a range of healthcare professions (medicine, nursing, physiotherapy and pharmacy) learn about patient safety in order to become safe practitioners. | |
Multi-site, mixed method collective case study. | |
: Eight case studies (two for each professional group) were carried out in educational provider sites considering different programmes, practice environments and models of teaching and learning. | |
Structured in phases relevant to the three knowledge contexts: | |
Documentary evidence (including undergraduate curricula, handbooks and module outlines), complemented with a range of views (from course leads, tutors and students) and observations in a range of academic settings. | |
Policy and management views of patient safety and influences on patient safety education and practice. NHS policies included, for example, implementation of the National Patient Safety Agency's , which encourages organisations to develop an organisational safety culture in which staff members feel comfortable identifying dangers and reporting hazards. | |
The cultures to which students are exposed i.e. patient safety in relation to day-to-day working. NHS initiatives included, for example, a hand washing initiative or introduction of infection control measures. | |
1. Practical, informal, learning opportunities were valued by students. On the whole, however, students were not exposed to nor engaged with important NHS initiatives such as risk management activities and incident reporting schemes. | |
2. NHS policy appeared to have been taken seriously by course leaders. Patient safety materials were incorporated into both formal and informal curricula, albeit largely implicit rather than explicit. | |
3. Resource issues and peer pressure were found to influence safe practice. Variations were also found to exist in students' experiences and the quality of the supervision available. | |
The curriculum and organisational documents collected differed between sites, which possibly reflected gatekeeper influences at each site. The recruitment of participants for focus group discussions proved difficult, so interviews or paired discussions were used as a substitute. |
What is a case study?
A case study is a research approach that is used to generate an in-depth, multi-faceted understanding of a complex issue in its real-life context. It is an established research design that is used extensively in a wide variety of disciplines, particularly in the social sciences. A case study can be defined in a variety of ways (Table (Table5), 5 ), the central tenet being the need to explore an event or phenomenon in depth and in its natural context. It is for this reason sometimes referred to as a "naturalistic" design; this is in contrast to an "experimental" design (such as a randomised controlled trial) in which the investigator seeks to exert control over and manipulate the variable(s) of interest.
Definitions of a case study
Author | Definition |
---|---|
Stake[ ] | (p.237) |
Yin[ , , ] | (Yin 1999 p. 1211, Yin 1994 p. 13) |
• | |
• (Yin 2009 p18) | |
Miles and Huberman[ ] | (p. 25) |
Green and Thorogood[ ] | (p. 284) |
George and Bennett[ ] | (p. 17)" |
Stake's work has been particularly influential in defining the case study approach to scientific enquiry. He has helpfully characterised three main types of case study: intrinsic , instrumental and collective [ 8 ]. An intrinsic case study is typically undertaken to learn about a unique phenomenon. The researcher should define the uniqueness of the phenomenon, which distinguishes it from all others. In contrast, the instrumental case study uses a particular case (some of which may be better than others) to gain a broader appreciation of an issue or phenomenon. The collective case study involves studying multiple cases simultaneously or sequentially in an attempt to generate a still broader appreciation of a particular issue.
These are however not necessarily mutually exclusive categories. In the first of our examples (Table (Table1), 1 ), we undertook an intrinsic case study to investigate the issue of recruitment of minority ethnic people into the specific context of asthma research studies, but it developed into a instrumental case study through seeking to understand the issue of recruitment of these marginalised populations more generally, generating a number of the findings that are potentially transferable to other disease contexts[ 3 ]. In contrast, the other three examples (see Tables Tables2, 2 , ,3 3 and and4) 4 ) employed collective case study designs to study the introduction of workforce reconfiguration in primary care, the implementation of electronic health records into hospitals, and to understand the ways in which healthcare students learn about patient safety considerations[ 4 - 6 ]. Although our study focusing on the introduction of General Practitioners with Specialist Interests (Table (Table2) 2 ) was explicitly collective in design (four contrasting primary care organisations were studied), is was also instrumental in that this particular professional group was studied as an exemplar of the more general phenomenon of workforce redesign[ 4 ].
What are case studies used for?
According to Yin, case studies can be used to explain, describe or explore events or phenomena in the everyday contexts in which they occur[ 1 ]. These can, for example, help to understand and explain causal links and pathways resulting from a new policy initiative or service development (see Tables Tables2 2 and and3, 3 , for example)[ 1 ]. In contrast to experimental designs, which seek to test a specific hypothesis through deliberately manipulating the environment (like, for example, in a randomised controlled trial giving a new drug to randomly selected individuals and then comparing outcomes with controls),[ 9 ] the case study approach lends itself well to capturing information on more explanatory ' how ', 'what' and ' why ' questions, such as ' how is the intervention being implemented and received on the ground?'. The case study approach can offer additional insights into what gaps exist in its delivery or why one implementation strategy might be chosen over another. This in turn can help develop or refine theory, as shown in our study of the teaching of patient safety in undergraduate curricula (Table (Table4 4 )[ 6 , 10 ]. Key questions to consider when selecting the most appropriate study design are whether it is desirable or indeed possible to undertake a formal experimental investigation in which individuals and/or organisations are allocated to an intervention or control arm? Or whether the wish is to obtain a more naturalistic understanding of an issue? The former is ideally studied using a controlled experimental design, whereas the latter is more appropriately studied using a case study design.
Case studies may be approached in different ways depending on the epistemological standpoint of the researcher, that is, whether they take a critical (questioning one's own and others' assumptions), interpretivist (trying to understand individual and shared social meanings) or positivist approach (orientating towards the criteria of natural sciences, such as focusing on generalisability considerations) (Table (Table6). 6 ). Whilst such a schema can be conceptually helpful, it may be appropriate to draw on more than one approach in any case study, particularly in the context of conducting health services research. Doolin has, for example, noted that in the context of undertaking interpretative case studies, researchers can usefully draw on a critical, reflective perspective which seeks to take into account the wider social and political environment that has shaped the case[ 11 ].
Example of epistemological approaches that may be used in case study research
Approach | Characteristics | Criticisms | Key references |
---|---|---|---|
Involves questioning one's own assumptions taking into account the wider political and social environment. | It can possibly neglect other factors by focussing only on power relationships and may give the researcher a position that is too privileged. | Howcroft and Trauth[ ] Blakie[ ] Doolin[ , ] | |
Interprets the limiting conditions in relation to power and control that are thought to influence behaviour. | Bloomfield and Best[ ] | ||
Involves understanding meanings/contexts and processes as perceived from different perspectives, trying to understand individual and shared social meanings. Focus is on theory building. | Often difficult to explain unintended consequences and for neglecting surrounding historical contexts | Stake[ ] Doolin[ ] | |
Involves establishing which variables one wishes to study in advance and seeing whether they fit in with the findings. Focus is often on testing and refining theory on the basis of case study findings. | It does not take into account the role of the researcher in influencing findings. | Yin[ , , ] Shanks and Parr[ ] |
How are case studies conducted?
Here, we focus on the main stages of research activity when planning and undertaking a case study; the crucial stages are: defining the case; selecting the case(s); collecting and analysing the data; interpreting data; and reporting the findings.
Defining the case
Carefully formulated research question(s), informed by the existing literature and a prior appreciation of the theoretical issues and setting(s), are all important in appropriately and succinctly defining the case[ 8 , 12 ]. Crucially, each case should have a pre-defined boundary which clarifies the nature and time period covered by the case study (i.e. its scope, beginning and end), the relevant social group, organisation or geographical area of interest to the investigator, the types of evidence to be collected, and the priorities for data collection and analysis (see Table Table7 7 )[ 1 ]. A theory driven approach to defining the case may help generate knowledge that is potentially transferable to a range of clinical contexts and behaviours; using theory is also likely to result in a more informed appreciation of, for example, how and why interventions have succeeded or failed[ 13 ].
Example of a checklist for rating a case study proposal[ 8 ]
Clarity: Does the proposal read well? | |
Integrity: Do its pieces fit together? | |
Attractiveness: Does it pique the reader's interest? | |
The case: Is the case adequately defined? | |
The issues: Are major research questions identified? | |
Data Resource: Are sufficient data sources identified? | |
Case Selection: Is the selection plan reasonable? | |
Data Gathering: Are data-gathering activities outlined? | |
Validation: Is the need and opportunity for triangulation indicated? | |
Access: Are arrangements for start-up anticipated? | |
Confidentiality: Is there sensitivity to the protection of people? | |
Cost: Are time and resource estimates reasonable? |
For example, in our evaluation of the introduction of electronic health records in English hospitals (Table (Table3), 3 ), we defined our cases as the NHS Trusts that were receiving the new technology[ 5 ]. Our focus was on how the technology was being implemented. However, if the primary research interest had been on the social and organisational dimensions of implementation, we might have defined our case differently as a grouping of healthcare professionals (e.g. doctors and/or nurses). The precise beginning and end of the case may however prove difficult to define. Pursuing this same example, when does the process of implementation and adoption of an electronic health record system really begin or end? Such judgements will inevitably be influenced by a range of factors, including the research question, theory of interest, the scope and richness of the gathered data and the resources available to the research team.
Selecting the case(s)
The decision on how to select the case(s) to study is a very important one that merits some reflection. In an intrinsic case study, the case is selected on its own merits[ 8 ]. The case is selected not because it is representative of other cases, but because of its uniqueness, which is of genuine interest to the researchers. This was, for example, the case in our study of the recruitment of minority ethnic participants into asthma research (Table (Table1) 1 ) as our earlier work had demonstrated the marginalisation of minority ethnic people with asthma, despite evidence of disproportionate asthma morbidity[ 14 , 15 ]. In another example of an intrinsic case study, Hellstrom et al.[ 16 ] studied an elderly married couple living with dementia to explore how dementia had impacted on their understanding of home, their everyday life and their relationships.
For an instrumental case study, selecting a "typical" case can work well[ 8 ]. In contrast to the intrinsic case study, the particular case which is chosen is of less importance than selecting a case that allows the researcher to investigate an issue or phenomenon. For example, in order to gain an understanding of doctors' responses to health policy initiatives, Som undertook an instrumental case study interviewing clinicians who had a range of responsibilities for clinical governance in one NHS acute hospital trust[ 17 ]. Sampling a "deviant" or "atypical" case may however prove even more informative, potentially enabling the researcher to identify causal processes, generate hypotheses and develop theory.
In collective or multiple case studies, a number of cases are carefully selected. This offers the advantage of allowing comparisons to be made across several cases and/or replication. Choosing a "typical" case may enable the findings to be generalised to theory (i.e. analytical generalisation) or to test theory by replicating the findings in a second or even a third case (i.e. replication logic)[ 1 ]. Yin suggests two or three literal replications (i.e. predicting similar results) if the theory is straightforward and five or more if the theory is more subtle. However, critics might argue that selecting 'cases' in this way is insufficiently reflexive and ill-suited to the complexities of contemporary healthcare organisations.
The selected case study site(s) should allow the research team access to the group of individuals, the organisation, the processes or whatever else constitutes the chosen unit of analysis for the study. Access is therefore a central consideration; the researcher needs to come to know the case study site(s) well and to work cooperatively with them. Selected cases need to be not only interesting but also hospitable to the inquiry [ 8 ] if they are to be informative and answer the research question(s). Case study sites may also be pre-selected for the researcher, with decisions being influenced by key stakeholders. For example, our selection of case study sites in the evaluation of the implementation and adoption of electronic health record systems (see Table Table3) 3 ) was heavily influenced by NHS Connecting for Health, the government agency that was responsible for overseeing the National Programme for Information Technology (NPfIT)[ 5 ]. This prominent stakeholder had already selected the NHS sites (through a competitive bidding process) to be early adopters of the electronic health record systems and had negotiated contracts that detailed the deployment timelines.
It is also important to consider in advance the likely burden and risks associated with participation for those who (or the site(s) which) comprise the case study. Of particular importance is the obligation for the researcher to think through the ethical implications of the study (e.g. the risk of inadvertently breaching anonymity or confidentiality) and to ensure that potential participants/participating sites are provided with sufficient information to make an informed choice about joining the study. The outcome of providing this information might be that the emotive burden associated with participation, or the organisational disruption associated with supporting the fieldwork, is considered so high that the individuals or sites decide against participation.
In our example of evaluating implementations of electronic health record systems, given the restricted number of early adopter sites available to us, we sought purposively to select a diverse range of implementation cases among those that were available[ 5 ]. We chose a mixture of teaching, non-teaching and Foundation Trust hospitals, and examples of each of the three electronic health record systems procured centrally by the NPfIT. At one recruited site, it quickly became apparent that access was problematic because of competing demands on that organisation. Recognising the importance of full access and co-operative working for generating rich data, the research team decided not to pursue work at that site and instead to focus on other recruited sites.
Collecting the data
In order to develop a thorough understanding of the case, the case study approach usually involves the collection of multiple sources of evidence, using a range of quantitative (e.g. questionnaires, audits and analysis of routinely collected healthcare data) and more commonly qualitative techniques (e.g. interviews, focus groups and observations). The use of multiple sources of data (data triangulation) has been advocated as a way of increasing the internal validity of a study (i.e. the extent to which the method is appropriate to answer the research question)[ 8 , 18 - 21 ]. An underlying assumption is that data collected in different ways should lead to similar conclusions, and approaching the same issue from different angles can help develop a holistic picture of the phenomenon (Table (Table2 2 )[ 4 ].
Brazier and colleagues used a mixed-methods case study approach to investigate the impact of a cancer care programme[ 22 ]. Here, quantitative measures were collected with questionnaires before, and five months after, the start of the intervention which did not yield any statistically significant results. Qualitative interviews with patients however helped provide an insight into potentially beneficial process-related aspects of the programme, such as greater, perceived patient involvement in care. The authors reported how this case study approach provided a number of contextual factors likely to influence the effectiveness of the intervention and which were not likely to have been obtained from quantitative methods alone.
In collective or multiple case studies, data collection needs to be flexible enough to allow a detailed description of each individual case to be developed (e.g. the nature of different cancer care programmes), before considering the emerging similarities and differences in cross-case comparisons (e.g. to explore why one programme is more effective than another). It is important that data sources from different cases are, where possible, broadly comparable for this purpose even though they may vary in nature and depth.
Analysing, interpreting and reporting case studies
Making sense and offering a coherent interpretation of the typically disparate sources of data (whether qualitative alone or together with quantitative) is far from straightforward. Repeated reviewing and sorting of the voluminous and detail-rich data are integral to the process of analysis. In collective case studies, it is helpful to analyse data relating to the individual component cases first, before making comparisons across cases. Attention needs to be paid to variations within each case and, where relevant, the relationship between different causes, effects and outcomes[ 23 ]. Data will need to be organised and coded to allow the key issues, both derived from the literature and emerging from the dataset, to be easily retrieved at a later stage. An initial coding frame can help capture these issues and can be applied systematically to the whole dataset with the aid of a qualitative data analysis software package.
The Framework approach is a practical approach, comprising of five stages (familiarisation; identifying a thematic framework; indexing; charting; mapping and interpretation) , to managing and analysing large datasets particularly if time is limited, as was the case in our study of recruitment of South Asians into asthma research (Table (Table1 1 )[ 3 , 24 ]. Theoretical frameworks may also play an important role in integrating different sources of data and examining emerging themes. For example, we drew on a socio-technical framework to help explain the connections between different elements - technology; people; and the organisational settings within which they worked - in our study of the introduction of electronic health record systems (Table (Table3 3 )[ 5 ]. Our study of patient safety in undergraduate curricula drew on an evaluation-based approach to design and analysis, which emphasised the importance of the academic, organisational and practice contexts through which students learn (Table (Table4 4 )[ 6 ].
Case study findings can have implications both for theory development and theory testing. They may establish, strengthen or weaken historical explanations of a case and, in certain circumstances, allow theoretical (as opposed to statistical) generalisation beyond the particular cases studied[ 12 ]. These theoretical lenses should not, however, constitute a strait-jacket and the cases should not be "forced to fit" the particular theoretical framework that is being employed.
When reporting findings, it is important to provide the reader with enough contextual information to understand the processes that were followed and how the conclusions were reached. In a collective case study, researchers may choose to present the findings from individual cases separately before amalgamating across cases. Care must be taken to ensure the anonymity of both case sites and individual participants (if agreed in advance) by allocating appropriate codes or withholding descriptors. In the example given in Table Table3, 3 , we decided against providing detailed information on the NHS sites and individual participants in order to avoid the risk of inadvertent disclosure of identities[ 5 , 25 ].
What are the potential pitfalls and how can these be avoided?
The case study approach is, as with all research, not without its limitations. When investigating the formal and informal ways undergraduate students learn about patient safety (Table (Table4), 4 ), for example, we rapidly accumulated a large quantity of data. The volume of data, together with the time restrictions in place, impacted on the depth of analysis that was possible within the available resources. This highlights a more general point of the importance of avoiding the temptation to collect as much data as possible; adequate time also needs to be set aside for data analysis and interpretation of what are often highly complex datasets.
Case study research has sometimes been criticised for lacking scientific rigour and providing little basis for generalisation (i.e. producing findings that may be transferable to other settings)[ 1 ]. There are several ways to address these concerns, including: the use of theoretical sampling (i.e. drawing on a particular conceptual framework); respondent validation (i.e. participants checking emerging findings and the researcher's interpretation, and providing an opinion as to whether they feel these are accurate); and transparency throughout the research process (see Table Table8 8 )[ 8 , 18 - 21 , 23 , 26 ]. Transparency can be achieved by describing in detail the steps involved in case selection, data collection, the reasons for the particular methods chosen, and the researcher's background and level of involvement (i.e. being explicit about how the researcher has influenced data collection and interpretation). Seeking potential, alternative explanations, and being explicit about how interpretations and conclusions were reached, help readers to judge the trustworthiness of the case study report. Stake provides a critique checklist for a case study report (Table (Table9 9 )[ 8 ].
Potential pitfalls and mitigating actions when undertaking case study research
Potential pitfall | Mitigating action |
---|---|
Selecting/conceptualising the wrong case(s) resulting in lack of theoretical generalisations | Developing in-depth knowledge of theoretical and empirical literature, justifying choices made |
Collecting large volumes of data that are not relevant to the case or too little to be of any value | Focus data collection in line with research questions, whilst being flexible and allowing different paths to be explored |
Defining/bounding the case | Focus on related components (either by time and/or space), be clear what is outside the scope of the case |
Lack of rigour | Triangulation, respondent validation, the use of theoretical sampling, transparency throughout the research process |
Ethical issues | Anonymise appropriately as cases are often easily identifiable to insiders, informed consent of participants |
Integration with theoretical framework | Allow for unexpected issues to emerge and do not force fit, test out preliminary explanations, be clear about epistemological positions in advance |
Stake's checklist for assessing the quality of a case study report[ 8 ]
1. Is this report easy to read? |
2. Does it fit together, each sentence contributing to the whole? |
3. Does this report have a conceptual structure (i.e. themes or issues)? |
4. Are its issues developed in a series and scholarly way? |
5. Is the case adequately defined? |
6. Is there a sense of story to the presentation? |
7. Is the reader provided some vicarious experience? |
8. Have quotations been used effectively? |
9. Are headings, figures, artefacts, appendices, indexes effectively used? |
10. Was it edited well, then again with a last minute polish? |
11. Has the writer made sound assertions, neither over- or under-interpreting? |
12. Has adequate attention been paid to various contexts? |
13. Were sufficient raw data presented? |
14. Were data sources well chosen and in sufficient number? |
15. Do observations and interpretations appear to have been triangulated? |
16. Is the role and point of view of the researcher nicely apparent? |
17. Is the nature of the intended audience apparent? |
18. Is empathy shown for all sides? |
19. Are personal intentions examined? |
20. Does it appear individuals were put at risk? |
Conclusions
The case study approach allows, amongst other things, critical events, interventions, policy developments and programme-based service reforms to be studied in detail in a real-life context. It should therefore be considered when an experimental design is either inappropriate to answer the research questions posed or impossible to undertake. Considering the frequency with which implementations of innovations are now taking place in healthcare settings and how well the case study approach lends itself to in-depth, complex health service research, we believe this approach should be more widely considered by researchers. Though inherently challenging, the research case study can, if carefully conceptualised and thoughtfully undertaken and reported, yield powerful insights into many important aspects of health and healthcare delivery.
Competing interests
The authors declare that they have no competing interests.
Authors' contributions
AS conceived this article. SC, KC and AR wrote this paper with GH, AA and AS all commenting on various drafts. SC and AS are guarantors.
Pre-publication history
The pre-publication history for this paper can be accessed here:
http://www.biomedcentral.com/1471-2288/11/100/prepub
Acknowledgements
We are grateful to the participants and colleagues who contributed to the individual case studies that we have drawn on. This work received no direct funding, but it has been informed by projects funded by Asthma UK, the NHS Service Delivery Organisation, NHS Connecting for Health Evaluation Programme, and Patient Safety Research Portfolio. We would also like to thank the expert reviewers for their insightful and constructive feedback. Our thanks are also due to Dr. Allison Worth who commented on an earlier draft of this manuscript.
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Case-based learning.
Case-based learning (CBL) is an established approach used across disciplines where students apply their knowledge to real-world scenarios, promoting higher levels of cognition (see Bloom’s Taxonomy ). In CBL classrooms, students typically work in groups on case studies, stories involving one or more characters and/or scenarios. The cases present a disciplinary problem or problems for which students devise solutions under the guidance of the instructor. CBL has a strong history of successful implementation in medical, law, and business schools, and is increasingly used within undergraduate education, particularly within pre-professional majors and the sciences (Herreid, 1994). This method involves guided inquiry and is grounded in constructivism whereby students form new meanings by interacting with their knowledge and the environment (Lee, 2012).
There are a number of benefits to using CBL in the classroom. In a review of the literature, Williams (2005) describes how CBL: utilizes collaborative learning, facilitates the integration of learning, develops students’ intrinsic and extrinsic motivation to learn, encourages learner self-reflection and critical reflection, allows for scientific inquiry, integrates knowledge and practice, and supports the development of a variety of learning skills.
CBL has several defining characteristics, including versatility, storytelling power, and efficient self-guided learning. In a systematic analysis of 104 articles in health professions education, CBL was found to be utilized in courses with less than 50 to over 1000 students (Thistlethwaite et al., 2012). In these classrooms, group sizes ranged from 1 to 30, with most consisting of 2 to 15 students. Instructors varied in the proportion of time they implemented CBL in the classroom, ranging from one case spanning two hours of classroom time, to year-long case-based courses. These findings demonstrate that instructors use CBL in a variety of ways in their classrooms.
The stories that comprise the framework of case studies are also a key component to CBL’s effectiveness. Jonassen and Hernandez-Serrano (2002, p.66) describe how storytelling:
Is a method of negotiating and renegotiating meanings that allows us to enter into other’s realms of meaning through messages they utter in their stories,
Helps us find our place in a culture,
Allows us to explicate and to interpret, and
Facilitates the attainment of vicarious experience by helping us to distinguish the positive models to emulate from the negative model.
Neurochemically, listening to stories can activate oxytocin, a hormone that increases one’s sensitivity to social cues, resulting in more empathy, generosity, compassion and trustworthiness (Zak, 2013; Kosfeld et al., 2005). The stories within case studies serve as a means by which learners form new understandings through characters and/or scenarios.
CBL is often described in conjunction or in comparison with problem-based learning (PBL). While the lines are often confusingly blurred within the literature, in the most conservative of definitions, the features distinguishing the two approaches include that PBL involves open rather than guided inquiry, is less structured, and the instructor plays a more passive role. In PBL multiple solutions to the problem may exit, but the problem is often initially not well-defined. PBL also has a stronger emphasis on developing self-directed learning. The choice between implementing CBL versus PBL is highly dependent on the goals and context of the instruction. For example, in a comparison of PBL and CBL approaches during a curricular shift at two medical schools, students and faculty preferred CBL to PBL (Srinivasan et al., 2007). Students perceived CBL to be a more efficient process and more clinically applicable. However, in another context, PBL might be the favored approach.
In a review of the effectiveness of CBL in health profession education, Thistlethwaite et al. (2012), found several benefits:
Students enjoyed the method and thought it enhanced their learning,
Instructors liked how CBL engaged students in learning,
CBL seemed to facilitate small group learning, but the authors could not distinguish between whether it was the case itself or the small group learning that occurred as facilitated by the case.
Other studies have also reported on the effectiveness of CBL in achieving learning outcomes (Bonney, 2015; Breslin, 2008; Herreid, 2013; Krain, 2016). These findings suggest that CBL is a vehicle of engagement for instruction, and facilitates an environment whereby students can construct knowledge.
Science – Students are given a scenario to which they apply their basic science knowledge and problem-solving skills to help them solve the case. One example within the biological sciences is two brothers who have a family history of a genetic illness. They each have mutations within a particular sequence in their DNA. Students work through the case and draw conclusions about the biological impacts of these mutations using basic science. Sample cases: You are Not the Mother of Your Children ; Organic Chemisty and Your Cellphone: Organic Light-Emitting Diodes ; A Light on Physics: F-Number and Exposure Time
Medicine – Medical or pre-health students read about a patient presenting with specific symptoms. Students decide which questions are important to ask the patient in their medical history, how long they have experienced such symptoms, etc. The case unfolds and students use clinical reasoning, propose relevant tests, develop a differential diagnoses and a plan of treatment. Sample cases: The Case of the Crying Baby: Surgical vs. Medical Management ; The Plan: Ethics and Physician Assisted Suicide ; The Haemophilus Vaccine: A Victory for Immunologic Engineering
Public Health – A case study describes a pandemic of a deadly infectious disease. Students work through the case to identify Patient Zero, the person who was the first to spread the disease, and how that individual became infected. Sample cases: The Protective Parent ; The Elusive Tuberculosis Case: The CDC and Andrew Speaker ; Credible Voice: WHO-Beijing and the SARS Crisis
Law – A case study presents a legal dilemma for which students use problem solving to decide the best way to advise and defend a client. Students are presented information that changes during the case. Sample cases: Mortgage Crisis Call (abstract) ; The Case of the Unpaid Interns (abstract) ; Police-Community Dialogue (abstract)
Business – Students work on a case study that presents the history of a business success or failure. They apply business principles learned in the classroom and assess why the venture was successful or not. Sample cases: SELCO-Determining a path forward ; Project Masiluleke: Texting and Testing to Fight HIV/AIDS in South Africa ; Mayo Clinic: Design Thinking in Healthcare
Humanities - Students consider a case that presents a theater facing financial and management difficulties. They apply business and theater principles learned in the classroom to the case, working together to create solutions for the theater. Sample cases: David Geffen School of Drama
Recommendations
Finding and Writing Cases
Consider utilizing or adapting open access cases - The availability of open resources and databases containing cases that instructors can download makes this approach even more accessible in the classroom. Two examples of open databases are the Case Center on Public Leadership and Harvard Kennedy School (HKS) Case Program , which focus on government, leadership and public policy case studies.
- Consider writing original cases - In the event that an instructor is unable to find open access cases relevant to their course learning objectives, they may choose to write their own. See the following resources on case writing: Cooking with Betty Crocker: A Recipe for Case Writing ; The Way of Flesch: The Art of Writing Readable Cases ; Twixt Fact and Fiction: A Case Writer’s Dilemma ; And All That Jazz: An Essay Extolling the Virtues of Writing Case Teaching Notes .
Implementing Cases
Take baby steps if new to CBL - While entire courses and curricula may involve case-based learning, instructors who desire to implement on a smaller-scale can integrate a single case into their class, and increase the number of cases utilized over time as desired.
Use cases in classes that are small, medium or large - Cases can be scaled to any course size. In large classes with stadium seating, students can work with peers nearby, while in small classes with more flexible seating arrangements, teams can move their chairs closer together. CBL can introduce more noise (and energy) in the classroom to which an instructor often quickly becomes accustomed. Further, students can be asked to work on cases outside of class, and wrap up discussion during the next class meeting.
Encourage collaborative work - Cases present an opportunity for students to work together to solve cases which the historical literature supports as beneficial to student learning (Bruffee, 1993). Allow students to work in groups to answer case questions.
Form diverse teams as feasible - When students work within diverse teams they can be exposed to a variety of perspectives that can help them solve the case. Depending on the context of the course, priorities, and the background information gathered about the students enrolled in the class, instructors may choose to organize student groups to allow for diversity in factors such as current course grades, gender, race/ethnicity, personality, among other items.
Use stable teams as appropriate - If CBL is a large component of the course, a research-supported practice is to keep teams together long enough to go through the stages of group development: forming, storming, norming, performing and adjourning (Tuckman, 1965).
Walk around to guide groups - In CBL instructors serve as facilitators of student learning. Walking around allows the instructor to monitor student progress as well as identify and support any groups that may be struggling. Teaching assistants can also play a valuable role in supporting groups.
Interrupt strategically - Only every so often, for conversation in large group discussion of the case, especially when students appear confused on key concepts. An effective practice to help students meet case learning goals is to guide them as a whole group when the class is ready. This may include selecting a few student groups to present answers to discussion questions to the entire class, asking the class a question relevant to the case using polling software, and/or performing a mini-lesson on an area that appears to be confusing among students.
Assess student learning in multiple ways - Students can be assessed informally by asking groups to report back answers to various case questions. This practice also helps students stay on task, and keeps them accountable. Cases can also be included on exams using related scenarios where students are asked to apply their knowledge.
Barrows HS. (1996). Problem-based learning in medicine and beyond: a brief overview. New Directions for Teaching and Learning, 68, 3-12.
Bonney KM. (2015). Case Study Teaching Method Improves Student Performance and Perceptions of Learning Gains. Journal of Microbiology and Biology Education, 16(1): 21-28.
Breslin M, Buchanan, R. (2008) On the Case Study Method of Research and Teaching in Design. Design Issues, 24(1), 36-40.
Bruffee KS. (1993). Collaborative learning: Higher education, interdependence, and authority of knowledge. Johns Hopkins University Press, Baltimore, MD.
Herreid CF. (2013). Start with a Story: The Case Study Method of Teaching College Science, edited by Clyde Freeman Herreid. Originally published in 2006 by the National Science Teachers Association (NSTA); reprinted by the National Center for Case Study Teaching in Science (NCCSTS) in 2013.
Herreid CH. (1994). Case studies in science: A novel method of science education. Journal of Research in Science Teaching, 23(4), 221–229.
Jonassen DH and Hernandez-Serrano J. (2002). Case-based reasoning and instructional design: Using stories to support problem solving. Educational Technology, Research and Development, 50(2), 65-77.
Kosfeld M, Heinrichs M, Zak PJ, Fischbacher U, Fehr E. (2005). Oxytocin increases trust in humans. Nature, 435, 673-676.
Krain M. (2016) Putting the learning in case learning? The effects of case-based approaches on student knowledge, attitudes, and engagement. Journal on Excellence in College Teaching, 27(2), 131-153.
Lee V. (2012). What is Inquiry-Guided Learning? New Directions for Learning, 129:5-14.
Nkhoma M, Sriratanaviriyakul N. (2017). Using case method to enrich students’ learning outcomes. Active Learning in Higher Education, 18(1):37-50.
Srinivasan et al. (2007). Comparing problem-based learning with case-based learning: Effects of a major curricular shift at two institutions. Academic Medicine, 82(1): 74-82.
Thistlethwaite JE et al. (2012). The effectiveness of case-based learning in health professional education. A BEME systematic review: BEME Guide No. 23. Medical Teacher, 34, e421-e444.
Tuckman B. (1965). Development sequence in small groups. Psychological Bulletin, 63(6), 384-99.
Williams B. (2005). Case-based learning - a review of the literature: is there scope for this educational paradigm in prehospital education? Emerg Med, 22, 577-581.
Zak, PJ (2013). How Stories Change the Brain. Retrieved from: https://greatergood.berkeley.edu/article/item/how_stories_change_brain
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- What Is a Case Study? | Definition, Examples & Methods
What Is a Case Study? | Definition, Examples & Methods
Published on May 8, 2019 by Shona McCombes . Revised on November 20, 2023.
A case study is a detailed study of a specific subject, such as a person, group, place, event, organization, or phenomenon. Case studies are commonly used in social, educational, clinical, and business research.
A case study research design usually involves qualitative methods , but quantitative methods are sometimes also used. Case studies are good for describing , comparing, evaluating and understanding different aspects of a research problem .
Table of contents
When to do a case study, step 1: select a case, step 2: build a theoretical framework, step 3: collect your data, step 4: describe and analyze the case, other interesting articles.
A case study is an appropriate research design when you want to gain concrete, contextual, in-depth knowledge about a specific real-world subject. It allows you to explore the key characteristics, meanings, and implications of the case.
Case studies are often a good choice in a thesis or dissertation . They keep your project focused and manageable when you don’t have the time or resources to do large-scale research.
You might use just one complex case study where you explore a single subject in depth, or conduct multiple case studies to compare and illuminate different aspects of your research problem.
Research question | Case study |
---|---|
What are the ecological effects of wolf reintroduction? | Case study of wolf reintroduction in Yellowstone National Park |
How do populist politicians use narratives about history to gain support? | Case studies of Hungarian prime minister Viktor Orbán and US president Donald Trump |
How can teachers implement active learning strategies in mixed-level classrooms? | Case study of a local school that promotes active learning |
What are the main advantages and disadvantages of wind farms for rural communities? | Case studies of three rural wind farm development projects in different parts of the country |
How are viral marketing strategies changing the relationship between companies and consumers? | Case study of the iPhone X marketing campaign |
How do experiences of work in the gig economy differ by gender, race and age? | Case studies of Deliveroo and Uber drivers in London |
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Once you have developed your problem statement and research questions , you should be ready to choose the specific case that you want to focus on. A good case study should have the potential to:
- Provide new or unexpected insights into the subject
- Challenge or complicate existing assumptions and theories
- Propose practical courses of action to resolve a problem
- Open up new directions for future research
TipIf your research is more practical in nature and aims to simultaneously investigate an issue as you solve it, consider conducting action research instead.
Unlike quantitative or experimental research , a strong case study does not require a random or representative sample. In fact, case studies often deliberately focus on unusual, neglected, or outlying cases which may shed new light on the research problem.
Example of an outlying case studyIn the 1960s the town of Roseto, Pennsylvania was discovered to have extremely low rates of heart disease compared to the US average. It became an important case study for understanding previously neglected causes of heart disease.
However, you can also choose a more common or representative case to exemplify a particular category, experience or phenomenon.
Example of a representative case studyIn the 1920s, two sociologists used Muncie, Indiana as a case study of a typical American city that supposedly exemplified the changing culture of the US at the time.
While case studies focus more on concrete details than general theories, they should usually have some connection with theory in the field. This way the case study is not just an isolated description, but is integrated into existing knowledge about the topic. It might aim to:
- Exemplify a theory by showing how it explains the case under investigation
- Expand on a theory by uncovering new concepts and ideas that need to be incorporated
- Challenge a theory by exploring an outlier case that doesn’t fit with established assumptions
To ensure that your analysis of the case has a solid academic grounding, you should conduct a literature review of sources related to the topic and develop a theoretical framework . This means identifying key concepts and theories to guide your analysis and interpretation.
There are many different research methods you can use to collect data on your subject. Case studies tend to focus on qualitative data using methods such as interviews , observations , and analysis of primary and secondary sources (e.g., newspaper articles, photographs, official records). Sometimes a case study will also collect quantitative data.
Example of a mixed methods case studyFor a case study of a wind farm development in a rural area, you could collect quantitative data on employment rates and business revenue, collect qualitative data on local people’s perceptions and experiences, and analyze local and national media coverage of the development.
The aim is to gain as thorough an understanding as possible of the case and its context.
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In writing up the case study, you need to bring together all the relevant aspects to give as complete a picture as possible of the subject.
How you report your findings depends on the type of research you are doing. Some case studies are structured like a standard scientific paper or thesis , with separate sections or chapters for the methods , results and discussion .
Others are written in a more narrative style, aiming to explore the case from various angles and analyze its meanings and implications (for example, by using textual analysis or discourse analysis ).
In all cases, though, make sure to give contextual details about the case, connect it back to the literature and theory, and discuss how it fits into wider patterns or debates.
If you want to know more about statistics , methodology , or research bias , make sure to check out some of our other articles with explanations and examples.
- Normal distribution
- Degrees of freedom
- Null hypothesis
- Discourse analysis
- Control groups
- Mixed methods research
- Non-probability sampling
- Quantitative research
- Ecological validity
Research bias
- Rosenthal effect
- Implicit bias
- Cognitive bias
- Selection bias
- Negativity bias
- Status quo bias
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McCombes, S. (2023, November 20). What Is a Case Study? | Definition, Examples & Methods. Scribbr. Retrieved October 11, 2024, from https://www.scribbr.com/methodology/case-study/
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Transit demand prediction is critical for effective public transit planning and operations, particularly in the unpredictable environment caused by the COVID-19 pandemic. Since the beginning of 2020, governments worldwide have implemented various non-pharmaceutical interventions to control the spread of the pandemic, impacting multiple sectors, such as education, health, industries, agriculture, and transportation. However, the specific effects of these interventions on transit ridership have yet to be quantified, making it a challenging task. This study shows that machine learning can be used to develop a model that correlates the impact of imposed interventions with other relevant variables on transit ridership. Four prediction models based on LSTM were developed, each using different groups of input variables related to both ridership and the pandemic. These input groups include seasonal data, non-pharmaceutical interventions, and COVID-19 statistics. Despite the difference in input variables, all models aimed to predict daily transit ridership. The results showed that the proposed model accurately and reliably maps the complex relationship between interventions and transit ridership. The predicted and actual results align closely, as evidenced by a high coefficient of determination (R 2 ) of 0.96, with data points clustered along the regression line. Implementing this model can be highly beneficial for managing transit demand during disasters and emergencies, where predicting transit demand is critical for operational and planning purposes.
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Acknowledgements
The authors thank the Punjab Mass Transit Authority for providing data for the Rawalpindi–Islamabad bus rapid transit system operating in the metropolitan areas of Islamabad and Rawalpindi, Pakistan.
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Appendix A : A detailed summary of NPIs with their scales implemented during the study period.
Information source : This data are collected from the official press releases of various departments of the Government of Pakistan through different social media platforms, official websites, departmental notifications, and newspapers.
Non-Pharmaceutical Intervention (NPI) | Scale | Description |
---|---|---|
Micro-smart lockdown | 0 1 | Implemented Not implemented |
Pharmacy, grocery, utility services, and essential retail | 0 1 | Closed Opened |
Non-essential retails | 0 1 | Closed Opened |
Educational institutes (schools, colleges, and universities) | 0 1 2 | Closed Opened with 50% attendance Opened with 100% attendance |
Public and private offices and establishments | 0 1 2 | Closed Opened with 50% attendance Opened with 100% attendance |
Restaurants, eateries, and fast-food joints | 0 1 2 | Closed only takeaway Only outdoor dining and takeaway Opened indoors and outdoors for vaccinated |
Marriage halls, community centers, and marquees | 0 1 2 | Completely closed, Opened only outdoors for 150–300 guests Opened indoors and outdoors for vaccinated |
Cinemas and theaters | 0 1 | Closed Opened |
Shrines and mazars | 0 1 | Closed Opened |
Sports, festivals, cultural and other events | 0 1 | Closed Opened |
Amusement and public parks | 0 1 | Closed Opened |
Swimming pools and water sports | 0 1 2 | Closed Partially opened Fully opened |
Industrial and agriculture activities | 0 1 2 | Closed Partially opened Fully opened |
Personal care, barbers, and beauty parlors | 0 1 | Closed Opened |
Fitness gyms/indoor courts | 0 1 | Closed Opened for vaccinated |
Interprovincial public transport | 0 1 2 | Completely closed Opened with 50% capacity Sat-Sun off Opened with 70–80% capacity all week |
Intercity and intra-city public transport | 0 1 2 | Completely closed Opened with 50% capacity Opened with 70–80% capacity all week |
Gatherings (cultural, musical, religious, and others) | 0 1 2 | Completely banned both indoor and outdoor Opened only outdoor Opened indoor and outdoor |
Tourism | 0 1 2 | Completely banned Controlled tourism Open tourism |
Commercial activities and markets | 0 1 2 3 4 | Completely closed Closed by 8 P.M Saturday, Sunday off Closed by 6 P.M Saturday, Sunday off Closed by 8 P.M, only Sunday off The whole week remained open and closed by 10 P.M |
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Zeb, M.S., Khan, M.A., Khattak, M.M.H. et al. Forecasting public transit ridership amidst COVID-19: a machine learning approach. Public Transp (2024). https://doi.org/10.1007/s12469-024-00368-5
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Published : 09 October 2024
DOI : https://doi.org/10.1007/s12469-024-00368-5
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Caresoft Global provided comprehensive support for New Product Introduction (NPI), which included process development, material planning, Process Failure Mode and Effect Analysis (PFMEA), and the creation of Standard Operating Procedures (SOPs). The goal was to ensure a seamless transition from product development to mass production while minimizing risks and maximizing production efficiency.
2. Manufacturing Process Development:
The project involved developing and deploying manufacturing processes, designing workstations, and planning material flow strategies. This included station design, material presentation, logistics design, and the creation of detailed work instructions to guide assembly operations effectively.
3. PFMEA and SOP Development:
Caresoft Global conducted PFMEA for critical processes and developed SOPs for assembly operations. This was essential for identifying potential failure modes, implementing preventive actions, and ensuring that the assembly process met the highest quality and efficiency standards.
4. Simulation and Throughput Analysis:
To further optimize the manufacturing process, Caresoft Global performed discrete event simulations (DES) and material flow simulations. These simulations helped identify bottlenecks, validate system throughput, and improve the utilization of both manpower and material handling equipment.
Challenges and Opportunities
The company faced several significant challenges:
- Complex Product Assembly :
The introduction of a new MX24 Series Dryers required the creation and development of over 1,150 SOPs and the management of 850 distinct assembly activities. Ensuring accurate execution of these complex processes on the first attempt was critical for the success of the product launch.
- Process Optimization :
The company needed to optimize its assembly line and material flow to minimize operator fatigue, reduce non-value-added activities, and ensure the efficient use of resources.
- Risk Management :
The implementation of PFMEA was necessary to identify and mitigate risks associated with the assembly process. This was particularly important to prevent potential failures that could disrupt production.
Solution Implementation
Caresoft Global implemented a comprehensive and structured approach to address the company’s challenges:
1. NPI and Manufacturing Support:
- Developed detailed PFEP (Plan for Every Part) and PFMEA for the new product introduction, focusing on material flow, process layout, and workstation design.
- Created SOPs and work instructions for each stage of the assembly process, providing clear operating guidance and minimizing the risk of errors.
- Provided on-site and remote support during the initial production runs, addressing operator queries and making real-time adjustments to enhance assembly efficiency.
2. Process Simulation and Analysis:
- Conducted throughput simulations to evaluate assembly line performance and identify potential bottlenecks, leading to optimized layouts and increased production efficiency.
- Performed material flow simulations to improve route utilization, reduce congestion, and optimize the use of material handling equipment.
3. Continuous Improvement:
- Implemented design improvements based on observations during initial production runs, resulting in a 10% increase in assembly efficiency and a reduction in rework.
- Developed a visual management system and KPI dashboards to monitor production performance, promoting continuous improvement efforts.
The strategic implementation of Caresoft Global’s solutions led to significant enhancements in the company’s NPI process and manufacturing efficiency:
- Enhanced Assembly Efficiency :
Over 90% of assembly processes were executed correctly on the first attempt, thanks to the comprehensive SOPs and real-time support provided by Caresoft Global. This achievement significantly reduced assembly time and rework.
- Risk Mitigation :
The PFMEA process successfully identified and mitigated potential risks in the assembly process, resulting in more robust and reliable production operations.
- Optimized Material Flow :
Material flow simulations and layout optimizations facilitated smoother and more efficient operations, reducing operator fatigue and enhancing overall productivity.
- Continuous Improvement :
The introduction of visual management tools and continuous improvement processes ensured that manufacturing operations could adapt and evolve, maintaining high levels of efficiency and quality over time.
Caresoft Global’s expertise in NPI support, manufacturing process development, and risk management empowered the company to successfully introduce new products while optimizing its production processes. The collaborative approach, coupled with advanced simulation and analysis tools, ensured that the company met its production goals while maintaining the highest standards of quality and efficiency. This project not only resolved immediate challenges but also established a foundation for sustained operational excellence in the future.
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COMMENTS
5. Build Your Self-Confidence. Finally, learning through the case study method can build your confidence. Each time you assume a business leader's perspective, aim to solve a new challenge, and express and defend your opinions and decisions to peers, you prepare to do the same in your career. According to a 2022 City Square Associates survey ...
It's been 100 years since Harvard Business School began using the case study method. Beyond teaching specific subject matter, the case study method excels in instilling meta-skills in students.
Case method 1 teaching is an active form of instruction that focuses on a case and involves students learning by doing 2 3. Cases are real or invented stories 4 that include "an educational message" or recount events, problems, dilemmas, theoretical or conceptual issue that requires analysis and/or decision-making.
INTRODUCTION. The case study teaching method is a highly adaptable style of teaching that involves problem-based learning and promotes the development of analytical skills ().By presenting content in the format of a narrative accompanied by questions and activities that promote group discussion and solving of complex problems, case studies facilitate development of the higher levels of Bloom ...
Case studies are a form of problem-based learning, where you present a situation that needs a resolution. A typical business case study is a detailed account, or story, of what happened in a particular company, industry, or project over a set period of time. The learner is given details about the situation, often in a historical context.
The case study approach aligns with constructivist theory, and is anchored in the tradition of active and experiential learning, supporting students to develop critical thinking and decision-making skills alongside subject specific content (Auster & Wylie, Citation 2006; Cox, Citation 2014; Kim et al., Citation 2006).
The Harvard Business School case study approach grew out of the Langdellian method. But instead of using established case law, business professors chose real-life examples from the business world to highlight and analyze business principles. ... Case studies: Engage readers in active learning; Can involve participant-led presentations ...
It is something students in the case method get lots of practice honing. 5. Collaboration. It is better to make business decisions after extended give-and-take, debate, and deliberation. As in any team sport, people get better at working collaboratively with practice. Discussing cases in small study groups, and then in the classroom, helps ...
The National Center for Case Study Teaching in Science, University of Buffalo. SUNY-Buffalo maintains this set of links to other case studies on the web in disciplines ranging from engineering and ethics to sociology and business. The American Anthropological Association's Handbook on Ethical Issues in Anthropology, Chapter 3: Cases ...
Case Method in Practice. Chris Christensen described case method teaching as "the art of managing uncertainty"—a process in which the instructor serves as "planner, host, moderator, devil's advocate, fellow-student, and judge," all in search of solutions to real-world problems and challenges. Unlike lectures, case method classes unfold ...
The case method prepares you to be in leadership positions where you will face time-sensitive decisions with limited information. Reflecting on each class discussion will prepare you to face these situations in your future roles. Student Perspectives. "I've been so touched by how dedicated other people have been to my learning and my ...
Case-based learning can focus on anything from a one-sentence physics word problem to a textbook-sized nursing case or a semester-long case in a law course. Though we often assume that a case is a "problem," Ellet (2007) suggests that most cases entail one of four types of situations: Problems. Decisions. Evaluations.
Simply put, the case method is a discussion of real-life situations that business executives have faced. HBS. The Learning Experience. The Case Study Method. On average, you'll attend three to four different classes a day, for a total of about six hours of class time (schedules vary). To prepare, you'll work through problems with your peers.
Cases are narratives, situations, select data samplings, or statements that present unresolved and provocative issues, situations, or questions (Indiana University Teaching Handbook, 2005). The case method is a participatory, discussion-based way of learning where students gain skills in critical thinking, communication, and group dynamics.
A major advantage of teaching with case studies is that the students are actively engaged in figuring out the principles by abstracting from the examples. This develops their skills in: Problem solving. Analytical tools, quantitative and/or qualitative, depending on the case. Decision making in complex situations.
1. Identify a problem to investigate: This should be something accessible and relevant to students' lives. The problem should also be challenging and complex enough to yield multiple solutions with many layers. 2. Give context: Think of this step as a movie preview or book summary.
Here are eight tips that I hope will be as helpful to you as they have been to me. 1. Develop Your Viewpoint. Effective and efficient case prep is, at least for me, the most challenging part of the whole experience. You can easily spend 2-3 hours on a case if you focus on every detail and supplementary piece of reading.
A multiple case studies approach was adopted that spanned over 2 years, as it is difficult to investigate all the aspects of a phenomenon in a single case study (Cruzes, Dybå, Runeson, & Höst, 2015). The purpose here is to suggest, help, and guide future research students based on what authors have learned while conducting an in-depth case ...
Teaching Strategies for Case-Based Learning. By bringing real world problems into student learning, cases invite active participation and innovative solutions to problems as they work together to reach a judgment, decision, recommendation, prediction or other concrete outcome. The Campus Instructional Consulting unit at Indiana University has ...
The case study approach is particularly useful to employ when there is a need to obtain an in-depth appreciation of an issue, event or phenomenon of interest, in its natural real-life context. ... "A case study is both the process of learning about the case and the product of our learning" (p.237) Yin[1,27,28]
Case-Based Learning. Case-based learning (CBL) is an established approach used across disciplines where students apply their knowledge to real-world scenarios, promoting higher levels of cognition (see Bloom's Taxonomy). In CBL classrooms, students typically work in groups on case studies, stories involving one or more characters and/or ...
A case study is a res earch approach that is used to ge n-. erate an in-depth, multi- faceted understanding of a. complex issue in its real- life context. It is an established. research design ...
Revised on November 20, 2023. A case study is a detailed study of a specific subject, such as a person, group, place, event, organization, or phenomenon. Case studies are commonly used in social, educational, clinical, and business research. A case study research design usually involves qualitative methods, but quantitative methods are ...
These strategies reflect various teaching and learning approaches, ranging from internships to coaching or mentoring, and include communities of practice (CoPs). ... study is a form of social research inquiry where examining the context is particularly critical to understanding the case. We follow an inductive approach in exploring the ...
Embedding clinically relevant learning experience in basic science subjects is desired for the preclinical phase of undergraduate medical education. The present study aimed to modify case-based learning (CBL) with a role-playing situational teaching method and assess the student feedback and learning effect. One hundred seventy-six sophomore students majoring in clinical medicine from Harbin ...
Case Study 1 Case Study Natalia A. Brocious Liberty University 1. What are the two options for identifying students with learning disabilities? Briefly summarize each one. The two options for identifying students with learning disabilities are the "discrepancy model" and the "response to intervention (RTI) model." (Vanderbilt, 2024) 1. Discrepancy Model: This model involves comparing a student ...
Education is a fundamental human right, of which prisoners should not be deprived. Lifelong learning opportunities in penitentiary contexts can empower individuals by equipping them with the tools to create new lives and livelihoods for themselves after release. Through fostering personal growth, and economic and social reintegration, prison education can result in lower rates of recidivism ...
3) Adopting the most satisfactory teaching mode for the entire class. In situations where teaching resources and staff are limited, a compromised approach may be necessary. In this case study, the blended teaching mode (A 2), which emerges as the best choice, can be prioritized for implementation. Compared to the common practice of randomly ...
This study shows that machine learning can be used to develop a model that correlates the impact of imposed interventions with other relevant variables on transit ridership. ... Liu and Chen suggested a multi-stage deep-learning approach for hourly passenger ... Rakibul Islam Md, Hadiuzzaman Md, Amin S (2021) Exploring the travel behavior ...
This case study highlights the strategic approach. Overview A leading Grain Storage and livestock management company partnered with Caresoft Global for comprehensive support in their New Product Introduction (NPI) and manufacturing process optimization. The company aimed to streamline its product development cycle, enhance production efficiency ...