1. Research Group on Care and Welfare, NHL Stenden University of Applied Sciences, 8917 DD Leeuwarden, The Netherlands
2. Department of Pedagogical and Educational Sciences, GION Education/Research, University of Groningen, 9712 TG Groningen, The Netherlands
3. KieN Early Intervention Service, 8911 KJ Leeuwarden, The Netherlands
4. Department of Psychiatry, UMC Utrecht Brain Centre, University Medical Centre Utrecht, 3584 CX Utrecht, The Netherlands
5. Department of Clinical and Developmental Neuropsychology, University of Groningen, 9712 TS Groningen, The Netherlands
6. Department of Psychotic Disorders, GGZ Drenthe, 9404 LA Assen, The Netherlands