August 1972

Repetitive Peer Separations of Juvenile-Age Rhesus Monkeys

Author Affiliations

Madison, Wis
From the Department of Psychiatry, University of Wisconsin School of Medicine (Dr. McKinney) and the Department of Psychology, Primate Laboratory, University of Wisconsin (Drs. Suomi and Harlow), Madison.

Arch Gen Psychiatry. 1972;27(2):200-203. doi:10.1001/archpsyc.1972.01750260050007

Male rhesus monkeys (Macaca mulatta) 3 years of age were studied before, during, and after a series of four separations from equal-aged peers with whom they had formed stable social bonds. The two-week separations were associated with increases in locomotion and environmental exploration and decreases in passivity. There was no suggestion of any "despair" stage as has been reported in younger organisms, thereby suggesting the importance of age as a variable in determining the response to separation.