Table 1. Subject Characteristics (Mean ± Standard Error).

	ASD	Control
No. of subjects	30 (24 M, 6 F)	30 (24 M, 6 F)
Age, y	10.7 ± 1.8	10.6 ± 1.6
Total IQ	108.4 ± 2.6	111.5 ± 2.2
Verbal IQ	113.3 ± 2.7	116.3 ± 2.5
Performance IQ	101.4 ± 3.1	100.6 ± 2.5
ADI-R social domaina	20 ± 1.1
ADI-R communication domainb	16 ± 0.8
ADI-R stereotype domainc	6 ± 0.5

Note: ASD = autism spectrum disorders; M = male; F = female; ADI-R = Autism Diagnostic Interview Revised.

^aCutoff for autism: 10;

^bCutoff for autism: 8;

^cCutoff for autism: 3.