Methods: The SDQ was completed by 126 parents and 98 individuals with ASD (in 79 cases both parent and self-report were available from the same families). Inter-rater reliability, test-retest stability, internal consistency, and construct validity were examined. SDQ subscales were also compared to clinically utilised measures of emotional disorders and hyperactivity to establish the ability to predict risk of disorder.
Results: Inter-rater reliability (r=.42), test-retest stability (r=.64), internal consistency (α=.52-.81) and construct validity (r=.42-.57) for the SDQ subscales were comparable to general population samples. Parent- and self-report SDQ subscales were significantly associated with measures of anxiety, depression and hyperactivity (62-74% correctly classified). Parent-report performed significantly better than self-report; adults with ASD under-reported difficulties.
Conclusions: The SDQ shows promise as a simple and efficient way to screen for emotional disorders and hyperactivity in adolescents and adults with ASD that could help reduce the impact of these disorders on individuals and their families. However, further more systematic attempts at validation are warranted.
- Autism spectrum disorder (ASD)
- Co-occurring disorder
- Co-morbid disorder
- Attention deficit hyperactivity disorder (ADHD)
- Obsessive-compulsive disorder (OCD)