Table 1.

Participant demographics

Measure	ASD (n = 20)	TD (n = 20)	P-value
Gender ratio	18 M: 2 F	16 M: 4 F	0.38a
Age (years)	10.51 ± 1.52	9.72 ± 1.61	0.12
Handedness	20 R	19 R: 1 A
FSIQ—WASI Scale	110.20 ± 16.12	119.53 ± 15.18b	0.07
Diagnostic—ADI-R
Social interaction	18.72 ± 6.53
Communication	15.22 ± 5.09
Restricted and repetitive behaviors	6.33 ± 2.50
Composite score	32.61 ± 10.58
Diagnostic—ADOS-2
Total: social affect and restricted and repetitive behavior	12.39 ± 3.79
Composite score	7.22 ± 1.73

Demographic and mean full-scale IQ (FSIQ) scores are shown for the sample. M, Male; F, Female; R, Right handed; A, Ambidextrous; WASI, Wechsler Abbreviated Scale of Intelligence (Wechsler, 1999); ADI-R, Autism Diagnostic Interview- Revised; ADOS-2 (Lord et al., 1994), Autism Diagnostic Observation Schedule, Second Edition (Lord et al., 2000; Gotham et al., 2007). ADI-R scores use ‘diagnostic’ algorithm. Composite scores were calculated for ADI-R and ADOS-2 (Gotham et al., 2009; Hus and Lord, 2013).

^aChi-Square test.

^bMissing one score.