Demographic and behavioral characteristics.

1

For ADI-R and ADOS scores.

2

Independent sample t-tests. All p values were not corrected for multiple comparisons.

3

Levene’s Test for Equality of Variances showed significant non-equal variances, therefore equal variance was not assumed in the statistical tests.

4

N = 32 for MA, N = 29 for FA.

5

Distribution of scores significantly deviant from normal, therefore non-parametric Mann-Whitney tests were performed for group comparison of ADOS algorithm scores.

MC = neurotypical control group male adults;

MA = male adults with ASC;

FC = neurotypical control group female adults;

FA = female adults with ASC;

SD = standard deviation; ns = non-significant (p>0.05);

ADI-R = Autism Diagnostic Interview-Revised; RSB: repetitive, restrictive and stereotyped behavior; ADOS: Autism Diagnostic Observation Schedule; S + C: ADOS ‘social interaction + communication’ total scores.