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Authors Li G, Jiang W, Du Y, Rossbach K
Received 8 March 2017
Accepted for publication 28 April 2017
Published 15 June 2017 Volume 2017:13 Pages 1541—1549
DOI https://doi.org/10.2147/NDT.S136477
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Prof. Dr. Roumen Kirov
Peer reviewer comments 2
Editor who approved publication: Professor Wai Kwong Tang
Purpose: This study aimed to explore the intelligence profiles of Chinese
school-aged boys with high-functioning autism spectrum disorder (HFASD) and
attention-deficit/hyperactivity disorder (ADHD). Additionally, differences in
intelligence quotient (IQ) between the HFASD group and the ADHD group were
examined.
Patients and
methods: Thirty-two boys with HFASD, 58 boys with ADHD, and 39 typically
developing (TD) boys aged 6–16 years participated in this study. The ADHD group
was divided into subgroups: ADHD-I (predominantly inattentive) and ADHD-C
(combined type). (The ADHD-H [hyperactive] group was excluded because of small
sample size). The Wechsler Intelligence Scale for Children-IV Chinese version
was administered to every participant, and the FSIQ (Full-Scale IQ) score was
used as the measure of IQ.
Results: Both boys with HFASD and ADHD (ADHD-I and ADHD-C) showed impairments in
Processing Speed Index and FSIQ, as compared to the TD group. Lower Verbal
Comprehension Index scores were found in the ASD and ADHD-I groups.
Interestingly, Working Memory Index was only impaired in children with ADHD. Additionally,
equivalent Perceptual Reasoning Index (PRI) scores were found among the HFASD,
ADHD, and TD groups.
Conclusion: Results indicated that both children with ADHD and HFASD have difficulty
in processing speed, which may be explained by these children having
neurodevelopmental disorders. These results also indicated that working memory
appears to only be impacted by having ADHD. Children with ASD are known to have
language difficulties while children with ADHD typically display working memory
deficits; thus, these findings were expected.
Keywords: autism spectrum disorder, attention-deficit/hyperactivity disorder,
child, intelligence, IQ, WISC-IV Chinese version
摘要视频链接:Intellectual functioning
within boys with HFASD and ADHD