About the Authors

Kathelijne Koops

kathelijne.koops@uzh.ch

Affiliations Anthropological Institute and Museum, University of Zurich, Zürich, Switzerland, Department of Archaeology and Anthropology, Division of Biological Anthropology, University of Cambridge, Cambridge, United Kingdom

Takeshi Furuichi

Affiliation Primate Research Institute, Kyoto University, Aichi, Inuyama, Japan

Chie Hashimoto

Affiliation Primate Research Institute, Kyoto University, Aichi, Inuyama, Japan

Carel P. van Schaik

Affiliation Anthropological Institute and Museum, University of Zurich, Zürich, Switzerland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KK. Performed the experiments: KK. Analyzed the data: KK. Contributed reagents/materials/analysis tools: KK CH TF. Wrote the paper: KK CPS.