About the Authors
- Jan M. Engelmann
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* E-mail: jan_engelmann@eva.mpg.de
Affiliation Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
- Esther Herrmann
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Affiliation Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
- Michael Tomasello
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Affiliation Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: JME EH MT. Performed the experiments: JME. Analyzed the data: JME EH MT. Wrote the paper: JME EH MT.