About the Authors

Dan T. A. Eisenberg

To whom correspondence should be addressed. E-mail: dtae@dtae.net

Affiliations Department of Anthropology, Northwestern University, Evanston, Illinois, United States of America, Department of Anthropology, State University of New York at Binghamton, Binghamton, New York, United States of America, Department of Biology, State University of New York at Binghamton, Binghamton, New York, United States of America, Laboratory of Evolutionary Anthropology and Health, State University of New York at Binghamton, Binghamton, New York, United States of America

Benjamin Campbell

Affiliation Department of Anthropology, University of Wisconsin Milwaukee, Milwaukee, Wisconsin, United States of America

James MacKillop

Affiliations Department of Psychology, State University of New York at Binghamton, Binghamton, New York, United States of America, Center for Alcohol and Addiction Studies, Brown University, Providence, Rhode Island, United States of America

J. Koji Lum

Affiliations Department of Anthropology, State University of New York at Binghamton, Binghamton, New York, United States of America, Department of Biology, State University of New York at Binghamton, Binghamton, New York, United States of America, Laboratory of Evolutionary Anthropology and Health, State University of New York at Binghamton, Binghamton, New York, United States of America

David S. Wilson

Affiliations Department of Anthropology, State University of New York at Binghamton, Binghamton, New York, United States of America, Department of Biology, State University of New York at Binghamton, Binghamton, New York, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DW DE JM. Performed the experiments: JL DE. Analyzed the data: DE. Contributed reagents/materials/analysis tools: JL. Wrote the paper: DE BC JM.