case study

noun

1. a study of an individual unit, as a person, family, or social group, usually emphasizing developmental issues and relationships with the environment, especially in order to compare a larger group to the individual unit.
2. case history.

noun

1. the act or an instance of analysing one or more particular cases or case histories with a view to making generalizations

n.

1. A detailed analysis of a person or group, especially as a model of medical, psychiatric, psychological, or social phenomena.
2. An exemplary or cautionary model; an instructive example.