1. School of Psychology, University of St AndrewsSt Andrews KY16 9AJ, UK
2. School of Psychology, University of AberdeenAberdeen AB24 2UB, UK
3. School of Biological Sciences, University of LiverpoolCrown Street, Liverpool L69 7ZB, UK
4. Department of Psychology, University of DurhamSouth Road, Durham DH1 3LE, UK
5. Department of Experimental Psychology, University of BristolBristol BS8 1TN, UK
6. Department of Psychology, Neuroscience and Behaviour, McMaster UniversityHamilton, Ontario L8S 4K1, Canada
7. Institute of Psychology, Humboldt UniversityRudower Chaussee 18, 12489 Berlin, Germany
8. International Max Planck Research School LIFE, Max Planck Institute for Human DevelopmentLentzeallee 94, 14195 Berlin, Germany
9. Department of Psychology, Harvard UniversityBoston, MA 02115-1613, USA
10. School of Computer Science, University of St AndrewsSt Andrews KY16 9SX, UK