A preliminary survey of the incidence of abnormal behavior in rhesus monkeys (Macaca mulatta) relative to housing condition (1992)

Bayne, K., Dexter, S., Suomi, S.

Abstract

To assess the behavioral status of individuals from one nonhuman primate species housed in different social [single vs group] and physical environments [corn crib vs indoor/outdoor run], we conducted a survey of abnormal behaviors in rhesus monkeys ... The greatest frequency of overall abnormal behavior and stereotypic exploratory behavior was in the SC [single cage] condition, and the lowest frequency of occurrence in the CC [corn crib] condition ... in IO [indoor/outdoor] runs, the animals showed no self-directed behavior.