Missakian, E. A. 1972. Effects of adult social experience on patterns of reproductive activity of socially deprived male rhesus monkeys (Macaca mulatta). Journal of Personality and Social Psychology 21(1), 131-134.

The three [single-caged, socially deprived] male subjects represented examples of severely disturbed animals as witnessed by rates of stereotyped behavior (self-aggression, stereotyped locomotion). The problem under investigation involved the extent to which social group experience as an adult could modify and/or reverse atypical behaviors produced by rearing under conditions of social deprivation. Two males showed a decrease in both stereotyped locomotion and self-aggression after being introduced into a group of rhesus macaques.