About the Authors

Simon J. Greenhill

simon.greenhill@anu.edu.au

Affiliations ARC Centre of Excellence for the Dynamics of Language, Australian National University, Canberra, Australia, ANU College of Asia and the Pacific, Australian National University, Canberra, Australia, Max Planck Institute for the Science of Human History, Jena, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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