||This article relies largely or entirely upon a single source. (November 2012)
In the social sciences, a clique (CanE, UK /ˈkliːk/ or US /ˈklɪk/ is a group of 2 to 12 (averaging 5 or 6) "persons who interact with each other more regularly and intensely than others in the same setting." Interacting with cliques is part of normative social development regardless of gender, ethnicity, or popularity. Although cliques are most commonly studied during adolescence and middle childhood, they exist in all age groups.
See also 
Clique in communication groups from Dunbar's number
- ^ Salkind, Neil (2008-01-01). "Cliques". Encyclopedia of educational psychology. Sage Publications.