Updates

Jan 14, Bambi Seminar, Smithsonian Tropical Research Institute, Barro Colorado Island, Panama -- "The Reciprocity Controversy" Jan 19, talk at University of Washington, Psychology Department -- "Why do vampire bats share food?" Jan 20, talk at University of Washington, Psych Dept, Animal Behavior Group -- "Reciprocity with and without social bonding" Feb 8-9, I'll be at … Continue reading Updates

Is the ingroup-outgroup bias just two points on a social distance spectrum?

Looking into the human literature on the evolution of cooperation, I feel that studies on humans are often conducted and interpreted poorly compared to studies of cooperation in ants, bacteria, fish, and other nonhuman primates. One point of confusion involves wrong assumptions about what individual humans should maximize and how well they should do it. But another … Continue reading Is the ingroup-outgroup bias just two points on a social distance spectrum?

New review of bat cooperation

Most of the 1,300 species of bats live in groups. Indeed, some are quite social, with relationships that last for years. For the latest issue on the evolution of direct benefits cooperation in Philosophical Transactions B, Jerry Wilkinson was asked to write a review on cooperation in bats and he co-wrote the article (PDF) with Kisi Bohn, and Danielle … Continue reading New review of bat cooperation