About the Authors

Eiko I. Fried


Affiliations Cluster of Excellence “Languages of Emotion”, Freie Universität Berlin, Berlin, Germany, Department of Education and Psychology, Freie Universität Berlin, Berlin, Germany

Randolph M. Nesse

Affiliation School of Life Sciences, Arizona State University, Tempe, Arizona, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: EF RN. Wrote the paper: EF RN.