About the Authors

Mathias Osvath


Affiliation Department of Cognitive Science, Lund University, Lund, Sweden

Elin Karvonen

Affiliation Lund University Primate Research Station Furuvik, Furuvik, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MO EK. Performed the experiments: EK. Analyzed the data: MO. Wrote the paper: MO.