1. Department of Psychology, Texas Christian University, Fort Worth, TX, USA
2. Department of Psychology, The University of Tennessee at Chattanooga, Chattanooga, TN, USA
3. Centre for Research in Psychology, Behaviour and Achievement, Coventry University, Coventry, UK
4. Institute for Cognitive and Evolutionary Anthropology, University of Oxford, Oxford, UK
5. Department of Psychology, Cleveland State University, Cleveland, OH, USA