Introduction: Emotional and behavioral problems are common in adolescents with mild to borderline intellectual disabilities (MBID). Basic Psychological Needs Theory connects fulfillment of basic psychological needs (autonomy, relatedness, competence) to ill-being (mental health problems). The associations between the frustration and satisfaction…

Few studies have explored the subjective mental health of adolescents with intellectual disabilities, while proxy ratings indicate an overrepresentation of mental health problems. The present study reports on the design and an initial empirical evaluation of the Well-being in Special Education Questionnaire (WellSEQ). Questions, response scales,…