in a case study, a researcher is most likely to conduct an in-depth study of a single research participant.
Case studies are in-depth analyses of a particular individual, group, circumstance, or community. Data are often acquired from a range of sources and by employing a variety of techniques (e.g. observations & interviews).
The case history, or personal history of the patient, is where the case study research methodology first appeared in clinical medicine. Case studies in psychology are frequently limited to the investigation of a single subject.
The material is mostly biographical and pertains to key current events in the person's life as well as prior significant occurrences (i.e., retrospective).
The case study is not a research method in and of itself; rather, researchers choose data gathering and analysis techniques that will provide case study material.
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