About the Authors

Ikuma Adachi

adachi@pri.kyoto-u.ac.jp

Affiliation Yerkes National Primate Research Center, Atlanta, Georgia, United States of America

Robert R. Hampton

Affiliation Yerkes National Primate Research Center, Atlanta, Georgia, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: IA RRH. Performed the experiments: IA. Analyzed the data: IA. Contributed reagents/materials/analysis tools: IA RRH. Wrote the paper: IA.