The present volume represents the result of two years of work originally begun as a fifteen-member student project under my supervision at NASA - Ames Research Center, Moffett Field, Calif- ornia. As a means of acquainting team members with previous research related to our NASA experiments with long-term isolation and confine- ment effects upon nonhuman primate behavior a weekly meeting was arranged for students to orally present abstracts of various articles they had read. As the number of references increased we decided to expand our efforts through several computer searches of the...