Papers in the Biological Sciences


Date of this Version



Published in Trends in Cognitive Sciences 8:5 (May 2004), pp. 195–197; doi: 10.1016/j.tics.2004.03.002 Copyright © 2004 Elsevier Ltd. Used by permission.


Two recently published studies provide important new data relevant to the evolution of human intelligence. Both studies of social behavior in baboons, Bergman et al. demonstrated that baboons use two criteria simultaneously to classify other troop members, and Silk et al. showed that highly social female baboons have higher reproductive success than less social females. Taken together, these studies provide strong evidence for the importance of social context in cognitive evolution.