Adaptive profiles in autism and other neurodevelopmental disorders.

ABSTRACT

We investigated the influence of specific autism spectrum disorder (ASD) deficits in learning adaptive behaviour, besides intelligence quotient (IQ). Participated 217 school-aged ASD (N = 115), and other neurodevelopmental disorders (OND) groups (N = 102) matched by Full-Scale IQ. We compared standard scores of Vineland Adaptive Behaviour Scale (VABS) in communication, daily living skills, socialization and adaptive behaviour composite. Pearson-correlation analysis was performed between each domain of VABS and Full-Scale, Verbal and Performance IQ, and chronological age (CA). Results indicated that impairment in adaptive behaviour within the domain of socialization skills remains a distinctive factor of ASD versus OND, independently of intellectual disability (ID). Co-occurring ID result in further debilitating effects on overall functioning, especially in ASD. CA is negatively associated with VABS scores.