Written by Pam MS, NCSP | Fact checked by Psychology Dictionary staff 

n. the process of grouping or classifying people, objects, events, and experiences. Usually, these are grouped according to classes based on (1) common characteristics which members share in a class and (2) distinct features which distinguish these members from those of other classes. See prototype theory. Also family resemblance hypothesis.

CATEGORIZATION: "The biological classification of organisms is based on a categorization according to genus and species."

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