Figure 1.
Distribution of total raw SRS scores in offspring from AGRE. SRS scores form a roughly bimodal distribution corresponding to ASD diagnosis. Consistent with the sex bias in ASD, males tend to have higher SRS scores indicating more severe social deficit. Distributions are highly similar regardless of respondent; the larger number of subjects with low SRS scores from parent respondents reflects ascertainment bias, as unaffected children more typically were assessed by parents but not by teachers.