Journal of Intellectual Disabilities, Ahead of Print.
Background: Understanding and supporting basic psychological needs of persons with complex support needs is important but difficult because of communicative challenges . We developed and tested questionnaires to obtain parents’ perspectives on autonomy support and basic psychological needs of autonomy, competence, and relatedness. Method: Two parent-informant questionnaires were developed, administered, and subjected to psychometric property analyses. Participants were 63 Dutch parents of persons diagnosed with severe or profound intellectual and multiple disabilities. Results: Principal component analyses revealed a one-factor structure for the Parental Perceptions on Autonomy-Supportive Experiences questionnaire, while the Parental Perceptions on Basic Psychological Need Signals questionnaire yielded two-factors interpreted as Noticing Signals of Autonomy and Noticing Signals of Competence/Relatedness. Evidence for construct validity was found for both instruments. Conclusions: Preliminary evaluation of the new questionnaires is encouraging, but further validation with a larger sample size is warranted.