Latest Past Events

Darby Saxbe – Hormones, Sleep, and Health Over the Transition to Parenthood

Darby Saxbe: University of Southern CaliforniaBecoming a parent is transformative. This talk will review recent research on neuroendocrine and behavioral changes in new parents, including studies of longitudinal change and within-person linkage in testosterone, cortisol, sleep, and depression in both mothers and fathers.

Sarah Mathew – Peer Sanctioning and Cultural Group Selection Promotes Large-Scale Cooperation: Evidence from Kenyan Pastoralists

Sarah Mathew: Arizona State UniversityExplaining why humans cooperate in sizable groups requires detailed knowledge of how people cooperate in politically uncentralized societies. I will present findings from the Turkana, a politically uncentralized population of pastoralists in Kenya, which indicate that: a) the Turkana maintain costly large-scale cooperation in warfare through peer sanctioning of free riders; and […]

Michael Gurven – Do Costs of Reproduction Affect Human Survival?

Michael Gurven: University of California, Santa BarbaraSex differences in human mortality and health are widely documented in both low and high income countries. Usual explanations focus on differences in intrinsic senescence, lifestyle, and health-seeking behaviors. Another possibility is that costs of reproduction unique to women may alter their physical condition in adulthood relative to men. […]