Adaptive skills are skills that are required to be able to function independently in society (Tassé et al., 2012). Such skills have become increasingly important in the classification of an intellectual disability. In the past, often only cognitive functioning in terms of IQ scores was used for determining an intellectual disability. Since the introduction of the DSM-5 (American Psychiatric Association, 2013), however, adaptive skills play a leading role in the classification of an intellectual disability. This shift is due to the worldwide growing awareness that it is not primarily intellectual functioning but particularly adaptive functioning that determines whether someone can meet society's demands.In practice however, many people with limitations in adaptive functioning are not recognized as such and do not receive support from organizations that specifically care for people with