1. Clinical and Developmental Neuropsychology, University of Groningen, 9712 TS Groningen, The Netherlands
2. Institute for Sport Sciences, University of Regensburg, D-93053 Regensburg, Germany
3. Autism Team Northern-Netherlands, Jonx, Department of (Youth) Mental Health and Autism of Lentis Psychiatric Institute, 9728 JR Groningen, The Netherlands
4. Lentis Psychiatric Institute, Outpatient Clinic for the Elderly, 9725 AG Groningen, The Netherlands
5. Clinical Psychology and Experimental Psychopathology, University of Groningen, 9712 TS Groningen, The Netherlands
6. Martini Hospital, Medical Psychology, 9728 NT Groningen, The Netherlands
7. Lentis Research, Lentis Psychiatric Institute, 9725 AG Groningen, The Netherlands
8. Autism Research Centre, Department of Psychiatry, University of Cambridge, Cambridge CB2 8AH, UK