Case Study Designs PowerPoint Presentation

Case Study Designs PowerPoint Presentation

2017-07-14 36K 36 0 0


Research Objective. Show direct cause & effect. Study relationships among variables for existing groups. Explain outcomes after the fact. Type of Design. True Experiment. Quasi-Experiment. Cross-Sectional. ID: 570028

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Case Study Designs


Research Objective

Show direct cause & effect

Study relationships among variables for existing groups

Explain outcomes after the fact


Type of Design

True Experiment




Explanatory Case Study

Exploratory Case




The purpose of the case study is to explore, understand and explain the processes and events that have led or contributed to one or more states or conditions of interest.


Distinctive Features

Unlike all experiments and all prospective cross-sectional or longitudinal designs, in the case study we work “backward” from a known state or condition.

Cases are selected because they exhibit the one or more states or conditions of interest.

Cases are selected based on the observable outcome of processes and events over time.

The state or condition usually refers to the current situation, but can refer to a condition or situation that existed at some point in the past.


When to Use Case Studies

We use


case studies when we observe a state or condition that is hard to understand, unanticipated, surprising – something that the current body of knowledge and theory will not explain adequately

We use


case studies when we want to build or test theoretical explanations for a condition or state of interest


Did you use one or more theoretical frameworks to develop the research question(s)?



Did you state the purpose of the study and the criteria by which the quality (success) of the study will be evaluated?

Did you develop


about the relationships between theoretical constructs or concepts based on those theoretical frameworks?




a case study




a case study


case study

Did you select multiple cases (replications) for study?




case explanatory study


case explanatory study

Did you use embedded units?






Common MISperceptions

There are many common misperceptions about case studies. By the time you study Yin, you should be able to explain why each of the following statements is a




Common MISperceptions

The case study is the same thing as the “one shot post-test only quasi-experiment.”

The case study is the same thing as an ethnography, life history analysis, or grounded theory.

Case studies do not depend on identifying one or more theories that serve as the basis for developing the research question.

Case studies do not require an careful statement of the systematized definitions of constructs of interest.


There is no need to state a proposition (or hypothesis) in the case study design.There is no need to define a theoretical or accessible population in the case study design.There are no guidelines (rules if you will) for selecting the cases.Results of case studies cannot be generalized.The case study does not require any consideration of threats to internal validity, external validity and explanatory power.

Common MISperceptions


Common MISperceptions

Case studies do not need a sample size of more than one.

Case studies can only be used to build, not test theory.

Case studies are just like cross-sectional or longitudinal designs, except for how the sample is selected.

Case studies share nothing in common with experiments.


The WORST Misperceptions

You do not need much advance thinking or preparation to conduct a case study – you can start collecting data very quickly.

A case study is a quick and easy way to complete a study.

You do not have to concern yourself much with analysis in case studies because they are

simply descriptions.


Common Uses Outside the Social Sciences

Another common misperception is that case studies are only used in the social sciences. Quite the contrary, many disciplines make widespread use of this design group. These include, for example

Geology and other earth sciences


Cosmology (how the universe formed and developed)

Forensic sciences (CSI, autopsy, and all that)

Evolutionary biology

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