Abstract
AimsThis study aimed to compare the intelligence profiles of children with autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder (ADHD) using the Korean Wechsler Intelligence Scale for Children–Fourth Edition (K-WISC-IV) scores to differentiate between their cognitive characteristics. MethodsSubjects were boys with ASD (n = 49) and ADHD (n = 44). The index and subtest scores of the ASD and ADHD groups were compared using MANOVA. Repeated-measures ANOVA was performed to investigate the cognitive strengths and weaknesses within the ASD and ADHD groups. ResultsVerbal comprehension was significantly lower in the ASD group compared to the ADHD group. The ASD group also scored lower than the ADHD group on Vocabulary, Comprehension, Picture Concepts, Picture Completion, and Symbol Search. The ADHD group scored lower than the ASD group on Digit Span. The ASD group displayed slower processing speed and social judgment, while the ADHD group exhibited poor working memory and graphomotor processing. ConclusionThe WISC-IV profiles might help distinguishing between the cognitive characteristics of ASD and ADHD boys.
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