Control over videotape enrichment for socially housed chimpanzees: Subsequent challenge tests (2001)

Lambeth, S. P., Bloomsmith, M., Baker, K. et al.

Abstract

The lower expression of stress-related behaviors by chimpanzees that took advantage of the opportunity to control the videotape apparatus implies that exerting control over the environment may have a generalized effect by lessening disturbance caused by mildly challenging situations.