1. Siméon T. A. Lahaije and Jorien Luijkx, Inclusive and Special Needs Education, Faculty of Behavioural and Social Sciences, University of Groningen, Groningen, The Netherlands; Aly Waninge, Research Group of Healthy Ageing, Allied Health Care and Nursing, Hanze University of Applied Sciences, Groningen, The Netherlands, and Department of Health Psychology, University Medical Center Groningen, Groningen, The Netherlands; and Annette A. J. van der Putten, Inclusive and Special Needs Education, Faculty of Behavioural and Social Sciences, University of Groningen, Groningen, The Netherlands