The study of a single individual is an example of idiographic research.
An idiographic research is an approach to research that focuses on in depth study of a single individual or case, in order to fully map out and comprehend the subject.
This approach emphasizes the unique aspects of each individual, her particular attitudes and behaviors. It is a common approach in some fields of psychology, particularly personality or developmental psychology, psychoanalysis, and clinical psychology
This is opposed to the nomothetic approach that focuses on groups of people from a collection of case studies, with the aim to uncover underlying laws and principles.
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