- Descriptive: describe an intervention and the context in which it occurred.
- Explanatory: explain causal links in interventions; link program implementation with program effects.
- Combined : Brings together findings from several case studies to answer an evaluation question.
- Overlap in real life!
- Illustrative
- Add realism and in-depth examples to other information about a program, project, or policy.
- Describe what is happening and why, to show what a situation is like.
- Often used to help interpret survey data.
- Generally selected as typical or representative of important variations.
- Number generally kept small.
Types of Descriptive Case Studies - Exploratory
- To explore those situations where little is known about the intervention or its potential outcomes.
Types of Descriptive Case Studies - Critical Instance
- To examine a single instance of unique interest or serve as a critical test of an assertion about a program, project, problem, or strategy.
- Program Implementation: The case study investigates operations, often at several sites, and often normatively.
- Program Effects: The case study examines causality and usually involves multisite and multimethod assessments.
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