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The Adult Repetitive Behaviours Questionnaire – 2 (RBQ-2A): A self-report measure of restricted and repetitive behaviours

Abstract
In two studies we developed and tested a new self-report measure of restricted and repetitive behaviours (RRB) suitable for adults. In Study 1, The Repetitive Behaviours Questionnaire-2 for adults (RBQ-2A) was completed by a sample of 163 neurotypical adults. Principal components analysis revealed two components: Repetitive Motor Behaviours and Insistence on Sameness. In Study 2, the mean RBQ-2A scores of a group of adults with autism spectrum disorder (ASD; N = 29) were compared to an adult neurotypical group (N = 37). The ASD sample had significantly higher total and subscale scores. These results indicate that the RBQ-2A has utility as a self-report questionnaire measure of RRBs suitable for adults, with potential clinical application.
Citation
Barrett, S.L., Uljarević, M., Baker, E.K., Richdale, A.L., Jones, C R.G., & Leekam, S.R. (2015). The Adult Repetitive Behaviours Questionnaire – 2 (RBQ-2A): A self-report measure of restricted and repetitive behaviours. Journal of Autism and Developmental Disorders, 45(11), 3680-92. doi: 10.1007/s10803-015-2514-6.

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