About the Authors

Vinet Coetzee

vcoetzee@tuks.co.za

Affiliation Department of Genetics, University of Pretoria, Pretoria, South Africa

Stella J. Faerber

Affiliation Department of General Psychology and Methodology, University of Bamberg, Bamberg, Germany

Jaco M. Greeff

Affiliation Department of Genetics, University of Pretoria, Pretoria, South Africa

Carmen E. Lefevre

Affiliation School of Psychology, University of St Andrews, St Andrews, United Kingdom

Daniel E. Re

Affiliation School of Psychology, University of St Andrews, St Andrews, United Kingdom

David I. Perrett

Affiliation School of Psychology, University of St Andrews, St Andrews, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: VC DP. Performed the experiments: VC. Analyzed the data: VC JMG DP DR CL SF. Contributed reagents/materials/analysis tools: VC DP DR CL SF. Wrote the paper: VC. Revised the manuscript critically for important intellectual content: VC DR JMG DP SF CL.