A case study is one of numerous ways of doing research whether it is social science related or even socially related. It is an in-depth investigation/study of a single individual, group, incident, or community. Other ways include experiments, surveys, or analysis of archival information.
Instead of applying samples plus following a rigid protocol to analyse limited number of variables, case study methods involve an in-depth, longitudinal examination of a single instance or event: a case. They provide a systematic way of looking at events, collecting data, analyzing information, and reporting the results (Miles 1994). As a result ...