1. Department of Psychology, Technische Universität Braunschweig, Braunschweig, Germany
2. Department of Psychological Medicine, University of Otago, Dunedin, New Zealand
3. Department of Psychology, University of Otago, Dunedin, New Zealand
4. School of Population Health, Curtin University, Perth, WA, Australia
5. Optentia Research Focus Area, North-West University, Potchefstroom, South Africa