I am interested in the evolution of primate social behavior and cognition. My past research has included work on mate choice in macaques, and the dynamics of social relationships in wild white-faced capuchin monkeys. Current research includes work on social traditions in capuchins, and communication (particularly communication about social relationships). I maintain a long-term capuchin monkey field site in Lomas Barbudal, Costa Rica. I regularly teach undergraduate courses in primate behavior and the evolution of human behavior.