About the Authors

Luke J. Matthews

ljmatth@fas.harvard.edu

Affiliation Department of Human Evolutionary Biology, Harvard University, Cambridge, Massachusetts, United States of America

Jamie J. Tehrani

Affiliation Department of Anthropology, Durham University, Durham, United Kingdom

Fiona M. Jordan

Affiliation Evolutionary Processes in Language and Culture, Max Planck Institute for Psycholinguistics, Nijmegen, The Netherlands

Mark Collard

Affiliations Human Evolutionary Studies Programme and Department of Archaeology, Simon Fraser University, Burnaby, British Columbia, Canada, Department of Anthropology, University of Missouri, Columbia, Missouri, United States of America

Charles L. Nunn

Affiliation Department of Human Evolutionary Biology, Harvard University, Cambridge, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LJM JJT FMJ MC CLN. Analyzed the data: LJM JJT FMJ. Wrote the paper: LJM JJT FMJ MC CLN.