The document provides an overview of the case study method as a qualitative research strategy. It defines a case study as an in-depth analysis of a single social unit such as an individual, group, or community. The summary is:
1) A case study involves an intensive analysis of a single social unit to understand its behavior patterns and relationship to the environment.
2) It uses multiple data sources to conduct an empirical inquiry of a limited number of events or conditions and their interrelationships.
3) Case studies have advantages like understanding a unit fully and forming hypotheses, but limitations include lack of comparability between cases and potential for false generalization.