Restricted and repetitive behaviours (RRBs) are a core feature of autism spectrum disorder. They constitute a major barrier to learning and social adaptation. The last decade of research has identified new measurement techniques and distinctive subtypes of RRBs. This article discusses promising new ideas and evidence on origins of RRBs emerging from neurobiology and developmental psychology. It also suggests areas for further research and makes recommendations for taking a developmental perspective by implementing early intervention targeted to improve RRBs.
Leekam, S. R., Prior, M. R., Uljarevic, M. (2011). Restricted and Repetitive Behaviors in Autism Spectrum Disorders: A Review of Research in the Last Decade. Psychological Bulletin, Vol. 137(4), p. 562-593.