Restricted or repetitive behavior (RRB) is common for individuals with visual impairment (VI), autism spectrum disorder (ASD), and intellectual disability. Previous reviews have suggested that VI may moderate the effectiveness of behavioral interventions to decrease RRB. A search of the single case literature resulted in 30 studies and 40…

There exists now a body of research that describes case studies of individuals with autism spectrum disorder (ASD) who have engaged, or are alleged to have engaged, in a range of illegal behaviours, and that attempts to estimate the prevalence of ASD at different stages of the criminal justice process. Taken together, this research does suggest…

Studies assessing sex/gender differences in autism spectrum conditions often fail to include typically developing control groups. It is, therefore, unclear whether observed sex/gender differences reflect those found in the general population or are particular to autism spectrum conditions. A systematic search identified articles comparing…

Available information is reviewed on defining features and diagnostic issues related to autism and related developmental disorders. Controversies over both the boundaries and the heterogeneity within the autism syndrome are evaluated. Diagnostic rating instruments for expediting systematic sample selection are critiqued. (Author/DB)