Advertisement
Research Article

Male Yawning Is More Contagious than Female Yawning among Chimpanzees (Pan troglodytes)

  • Jorg J. M. Massen mail,

    jorgmassen@gmail.com

    Affiliations: Department of Behavioural Biology, Utrecht University, Utrecht, The Netherlands, Department of Cognitive Biology, University of Vienna, Vienna, Austria

    X
  • Dorith A. Vermunt,

    Affiliation: Department of Behavioural Biology, Utrecht University, Utrecht, The Netherlands

    X
  • Elisabeth H. M. Sterck

    Affiliations: Department of Behavioural Biology, Utrecht University, Utrecht, The Netherlands, Ethology Research, Biomedical Primate Research Centre, Rijswijk, The Netherlands

    X
  • Published: July 11, 2012
  • DOI: 10.1371/journal.pone.0040697

About the Authors

Jorg J. M. Massen, Dorith A. Vermunt, Elisabeth H. M. Sterck
Department of Behavioural Biology, Utrecht University, Utrecht, The Netherlands
Jorg J. M. Massen
Department of Cognitive Biology, University of Vienna, Vienna, Austria
Elisabeth H. M. Sterck
Ethology Research, Biomedical Primate Research Centre, Rijswijk, The Netherlands

Corresponding Author

Email: jorgmassen@gmail.com

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.