1. Center for Society and Genetics; University of California-Los Angeles; Los Angeles; California
2. Department of Human Evolutionary Biology; Harvard University; Cambridge; Massachusetts
3. Department of Psychology; Trinity University; San Antonio; Texas
4. Department of Experimental Psychology; Institute of Psychology; University of São Paulo; São Paulo; Brazil
5. Department of Anthropology; Washington State University; Pullman; Washington
6. Department of Anthropology; University of Calgary; Calgary; Canada
7. Division of Biological Sciences; University of Montana; Missoula; Montana
8. Department of Ecology and Evolutionary Biology; University of California-Los Angeles; Los Angeles; California