Depressive behavior in adult monkeys following separation from family environment.

Studied the reactions of 10 nuclear family-reared young adult rhesus monkeys to separation from their families. Ss housed with friends during family separation were relatively unaffected by the separation, as were Ss housed with both friends and strangers. However, Ss individually housed following family removal exhibited depressivelike behaviors previously observed only in infant monkeys separated from mother and/or peers. (PsycINFO Database Record (c) 2010 APA, all rights reserved)