title: 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.
authors.affiliation: Wales Autism Research Centre, School of Psychology, Cardiff University, Tower Building, Park Place, Cardiff, CF10 3AT, UK. BarrettSL2@cardiff.ac.uk.
authors.forename: Sarah L
authors.initials: SL
authors.lastname: Barrett
authors.affiliation: Olga Tennison Autism Research Centre, Cooperative Research Centre for Living with Autism Spectrum Disorders (Autism CRC), School of Psychology and Public Health, La Trobe University, Bundoora, 3086, Australia.
authors.forename: Mirko
authors.initials: M
authors.lastname: Uljarević
authors.affiliation: Olga Tennsion Autism Research Centre, School of Psychology and Public Health, La Trobe University, Melbourne, Australia.
authors.forename: Emma K
authors.initials: EK
authors.lastname: Baker
authors.affiliation: Olga Tennsion Autism Research Centre, School of Psychology and Public Health, La Trobe University, Melbourne, Australia.
authors.forename: Amanda L
authors.initials: AL
authors.lastname: Richdale
authors.affiliation: Wales Autism Research Centre, School of Psychology, Cardiff University, Tower Building, Park Place, Cardiff, CF10 3AT, UK.
authors.forename: Catherine R G
authors.initials: CR
authors.lastname: Jones
authors.affiliation: Wales Autism Research Centre, School of Psychology, Cardiff University, Tower Building, Park Place, Cardiff, CF10 3AT, UK.
authors.forename: Susan R
authors.initials: SR
authors.lastname: Leekam
mesh_terms: D000328:Adult; D000067877:Autism Spectrum Disorder / Q000175:diagnosis / Q000523:psychology*; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008297:Male; D025341:Principal Component Analysis; D057566:Self Report; D013239:Stereotyped Behavior; D011795:Surveys and Questionnaires
keywords: Adults; Autism; Principal components analysis; Questionnaire; Repetitive behaviours