About the Authors
- Anne Hertel
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* E-mail: anne.hertel@hotmail.com
Affiliations Max Planck Institute for Evolutionary Anthropology, Department of Developmental and Comparative Psychology, Leipzig, Germany, University of Bremen, Institute of Ecology, Bremen, Germany
- Juliane Kaminski
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Affiliations Max Planck Institute for Evolutionary Anthropology, Department of Developmental and Comparative Psychology, Leipzig, Germany, University of Portsmouth, King Henry Building, Portsmouth, United Kingdom
- Michael Tomasello
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Affiliation Max Planck Institute for Evolutionary Anthropology, Department of Developmental and Comparative Psychology, Leipzig, Germany
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: AH JK MT. Performed the experiments: AH. Analyzed the data: AH JK MT. Wrote the paper: AH JK MT.