Table 2: Descriptive statistics by group.

ASD HR-Other HR-TD LR-TD ADOS CSS 7.18 (0.98) 5.00 (2.63) 1.75 (0.94) 1.59 (1.18) 50.66 <0.001 0.70 ToM scaled score 6.67 (3.17) 9.09 (3.65) 11.13 (3.72) 12.36 (2.85) 7.84 <0.001 0.27 CELF-4 Core Language SS 90.00 (22.23) 93.17 (18.82) 108.04 (11.95) 109.73 (10.65) 7.76 <0.001 0.27 Griffith cognitive empathy 0.63 (5.73) 6.25 (8.61) 9.55 (7.39) 8.84 (6.29) 4.23 0.009 0.19 VABS ABC 86.82 (15.17) 93.63 (18.95) 102.09 (25.62) 105.87 (12.41) 2.41 0.08 0.12 DAS NVIQ 105.27 (12.91) 104.92 (16.67) 107.71 (13.43) 104.32 (9.66) 0.17 0.92 0.08 Social reference to examiner (%time) 76.63 (31.81) 79.10 (30.31) 69.75 (32.77) 72.00 (25.18) 0.69 0.56 0.03 Griffith affective empathy 6.13 (9.30) 9.67 (8.18) 9.64 (7.56) 6.42 (11.29) 0.612 0.61 0.03

Note. Standard deviations appear in parentheses below means. Analyses of variance were covaried by age. ASD > LR-TD; HR-Other > LR-TD; ASD < LR-TD; HR-Other < LR-TD.