Table 1: Participant characteristics by group.

HR-ASD ()HR-Other ()HR-Typical ()LR-Typical ()

Male, %
63.6450.0037.5059.090.39
Caucasian, %
363158840.001
High SES2, %
605024520.25
Age at testing in years, M (SD)
5.46 (0.46)6.04 (1.29)5.52 (0.45)5.89 (0.41)0.01

Note. Some families did not provide complete demographic data. Percentages are relative to all responses received.
1 value = significance level for Kruskal-Wallis test of overall group differences.
2High SES = annual family income ≥ USD $125,000.