Subcategories of restricted and repetitive behaviors in children with autism spectrum disorders

Somer L. Bishop, Vanessa Hus, Amie Duncan, Marisela Huerta, Katherine Gotham, Andrew Pickles, Abba Kreiger, Andreas Buja, Sabata Lund, Catherine Lord

Research output: Contribution to journalArticlepeer-review

206 Scopus citations


Research suggests that restricted and repetitive behaviors (RRBs) can be subdivided into Repetitive Sensory Motor (RSM) and Insistence on Sameness (IS) behaviors. However, because the majority of previous studies have used the Autism Diagnostic Interview-Revised (ADI-R), it is not clear whether these subcategories reflect the actual organization of RRBs in ASD. Using data from the Simons Simplex Collection (n = 1,825), we examined the association between scores on the ADI-R and the Repetitive Behavior Scale-Revised. Analyses supported the construct validity of RSM and IS subcategories. As in previous studies, IS behaviors showed no relationship with IQ. These findings support the continued use of RRB subcategories, particularly IS behaviors, as a means of creating more behaviorally homogeneous subgroups of children with ASD.

Original languageEnglish (US)
Pages (from-to)1287-1297
Number of pages11
JournalJournal of Autism and Developmental Disorders
Issue number6
StatePublished - Jun 2013
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Developmental and Educational Psychology


  • Autism spectrum disorders
  • Insistence on sameness
  • Repetitive behaviors
  • Repetitive sensory motor
  • Subcategories


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