About the Authors
- Jorg J. M. Massen
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* E-mail: jorgmassen@gmail.com
Affiliations Department of Behavioural Biology, Utrecht University, Utrecht, The Netherlands, Department of Cognitive Biology, University of Vienna, Vienna, Austria
- Dorith A. Vermunt
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Affiliation Department of Behavioural Biology, Utrecht University, Utrecht, The Netherlands
- Elisabeth H. M. Sterck
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Affiliations Department of Behavioural Biology, Utrecht University, Utrecht, The Netherlands, Ethology Research, Biomedical Primate Research Centre, Rijswijk, The Netherlands
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: JM. Performed the experiments: JM DV. Analyzed the data: JM. Contributed reagents/materials/analysis tools: JM. Wrote the paper: JM DV ES.