Margaret Barrett

Sex differences in developing social relationships in infant chacma baboons (Papio ursinus)

This research aims to determine if male and female infant chacma baboons differ in their social behavior and if such differences have potential to contribute to the development of sex differences in dominance relationships later in life. By studying captive chacma baboons at a sanctuary in South Africa, Meg Barrett is able to investigate these questions under conditions that control for maternal influences.

John P. Calcitrai

Stress and Sociality in Wild Bornean Orangutans (Pongo pygmaeus wurmbii)

Orangutans are unusual among anthropoid primates for their relatively solitary life styles. This research is examining a possible mechanism for that social outcome: are social interactions with conspecifics stressful for orangutans? JP Calcitrai is analyzing stress hormones in urine samples and determining if variation in those hormones is correlated with variation in social association rates among the orangutans.