1. Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, CA 900079, USA
2. Department of Evolutionary Anthropology, Duke University, Durham, NC 27708, USA
3. Departments of Psychology and Psychiatry, University of Arizona, Tucson, AZ 85721, USA
4. Evelyn F. McKnight Brain Institute, University of Arizona, Tucson, AZ 85721, USA
5. Neuroscience Graduate Interdisciplinary Program, University of Arizona, Tucson, AZ 85721, USA
6. Physiological Sciences Graduate Interdisciplinary Program, University of Arizona, Tucson, AZ 85721, USA
7. BIO5 Institute, University of Arizona, Tucson, AZ 85721, USA
8. Department of Anthropology, University of California Los Angeles, CA 90095, USA
9. Department of Human Behavior, Ecology, and Culture, Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany
10. School of Anthropology, University of Arizona, Tucson, AZ 85721, USA
11. Department of Archaeology, University of Dar es Salaam, Dar es Salaam, Tanzania