About the Authors
- Katharina C. Kirchhofer
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* E-mail: katharina.kirchhofer@gmail.com
Affiliation Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
- Felizitas Zimmermann
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Affiliation Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
- Juliane Kaminski
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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: KK FZ JK MT. Performed the experiments: KK JK. Analyzed the data: KK JK. Contributed reagents/materials/analysis tools: JK KK. Wrote the paper: FZ JK KK MT.