1Department of Psychology, Berry College, USA
2Department of Biology, Division of Psychobiology, Yerkes Regional Primate Research Center, Emory University, Atlanta, GA 30322, USA
3Department of Anthropology, Division of Psychobiology, Yerkes Regional Primate Research Center, Emory University, Atlanta, GA 30322, USA
4Department of Living Links Center, Division of Psychobiology, Yerkes Regional Primate Research Center, Emory University, Atlanta, GA 30322, USA
5Corresponding Author and Address: William D. Hopkins, Division of Psychobiology, Yerkes Regional Primate Research Center, Emory University, Atlanta, GA 30322, USA
Website publication 16 August 1998
ACKNOWLEDGEMENTS: This investigation was supported in part by NIH grant RR-00165 and NS-29574. The supportive services provided by the Veterinary Department and care staff of the Yerkes Center are greatly appreciated. We thank Dr Tom Insel for providing administrative and financial assistance in scanning the subjects.
Received 27 May 1998; accepted 22 June 1998
