Control vs. passive exposure to joystick-controlled computer tasks intended as enrichment for chimpanzees (Pan troglodytes) (2001)

Baker, K. C., Bloomsmith, M. L., Ross, S. et al.

Abstract

This study aimed to test the effects of enhancing control, via joystick-controlled computer games. .. More time spent watching the monitor was associated with more social and lone play and object manipulation, and less inactivity. .. Under mildly stressful conditions, subjects with prior control of the computer task scratched significantly less, suggesting lower levels of anxiety. However, adult subjects with control showed more distress vocalizations.