| Sumario: | Special interests (SIs) are part of the diagnostic criteria for autism spectrum disorder (ASD). Though they can have both positive and negative effects on functioning and long-term outcomes, research on SIs is limited. This pilot study used a newly developed parent-report measure, the Special Interest Survey, to characterize SIs in 1992 children with ASD. The mean number of current special interests reported was 9, with television, objects, and music being most commonly endorsed interests. The mean age of onset reported across all categories was 5.24 years, with duration of past interests most often exceeding 2 years. Age of onset, interference, and relative unusualness of the SI was varied across categories. Interference was significantly correlated with the unusualness of the SIs.
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