期刊
JOURNAL OF AUTISM AND DEVELOPMENTAL DISORDERS
卷 51, 期 10, 页码 3391-3400出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10803-020-04800-0
关键词
Autism spectrum disorder; Attention deficit; hyperactivity disorder; Factor analysis; Restricted and repetitive behaviors
资金
- NSERC Discovery Grant [RGPIN-2017-04656]
- SSHRC Insight Grant [435-2017-0936]
- University of Western Ontario Faculty Development Research Fund
- province of Ontario Early Researcher Award
- Canadian Foundation for Innovation John R. Evans Leaders Fund [37497]
Restricted interests and repetitive behaviors (RRBs) are core symptoms of both autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder (ADHD), with similar factor structures observed in both disorders but more severe symptoms in ASD, as well as differences in the relationship with IQ.
Restricted interests and repetitive behaviors (RRBs) are core symptoms of autism spectrum disorder (ASD), and commonly occur in attention-deficit/hyperactivity disorder (ADHD). Little is known about how RRBs manifest in ADHD. We quantified and compared factor structures of RRBs in children with ASD (n = 634) or ADHD (n = 448), and related factors to sex and IQ. A four-factor solution emerged, including Stereotypy, Self-Injury, Compulsions, and Ritualistic/Sameness. Factor structures were equivalent across diagnoses, though symptoms were more severe in ASD. IQ negatively correlated with Stereotypy, Self-Injury, and Compulsions in ASD, and negatively correlated with Compulsions and Ritualistic/Sameness behaviors in ADHD. In ASD only, females exhibited higher Self-Injury. Thus, patterns of RRBs are preserved across ASD and ADHD, but severity and relationship with IQ differed.
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