The online version of this article (doi:10.1186/2040-2392-5-12) contains supplementary material, which is available to authorized users.
None of the authors have any biomedical financial interests or potential conflicts of interest.
DM, KK, HA, and KW designed the study. DM and KK collected stimulus materials. DM, YT, and SU collected the data. DM analyzed the data. All authors contributed to drafting this manuscript. All authors read and approved the final manuscript.
Despite the emphasis of autism spectrum disorders as a continuum of atypical social behaviors and the sexual heterogeneity of phenotypic manifestations, whether gaze processing constitutes an autistic endophenotype in both sexes remains unclear. Using the Autism-Spectrum Quotient and a psychophysical approach in a normal population (N = 128), here we demonstrated that individual differences in autistic traits predicted direct-gaze perception for males, but not for females. Our findings suggest that direct-gaze perception may not constitute an autistic endophenotype in both sexes, and highlight the importance of sex differences when considering relationships between autistic traits and behaviors.
Additional file 1: Supplemental methods and results. Supplemental methods presenting detailed methods. Supplemental results and discussion presenting detailed results and related discussion. Table S1. Presenting detailed participant characteristics. Figure S1. Presenting angle psychometric functions. Figure S2. Presenting correlation in the geometric control condition. (DOCX 136 KB)13229_2013_104_MOESM1_ESM.docx
Authors’ original file for figure 113229_2013_104_MOESM2_ESM.pdf
Moriuchi JM, Klin A, Jones W: Sex differences in dynamic visual scanning patterns in school-age children with autism spectrum disorders. International Meeting for Autism Research. 2013, Donostia/San Sebastián, Spain
- Individual differences in autistic traits predict the perception of direct gaze for males, but not for females
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