Table 2.

Mean SRS-2 scores across groups for probands, siblings, and biological parents

Individual assessed	SRS-2 parent-report		SRS-2 teacher-report		Spouse-report
	Males	Females	Males	Females
ASD-diagnosed subjects	100.5 (±28.9) N = 76	105.0 (±21.6) N = 7	90.7 (±26.2) N = 42	123.3 (±19.6) N = 3	–
Sibs of ASD cases	37.0 (±25.5) N = 38	28.4 (±25.4) N = 35	44.4 (±21.3) N = 21	40.0 (±27.8) N = 13	–
Typical control subjects	29.3 (±19.6) N = 34	27.6 (±19.7) N = 30	14.0 (±20.0) N = 3	32.5 (±14.9) N = 2	–
Siblings of typical controls	32.3 (±21.1) N = 48	35.2 (±22.3) N = 17	19.5 (±17.3) N = 8	27.0 (±4.2) N = 2	–
Mothers of ASD subjects	–	–	–	–	35.0 (±25.6) N = 64
Fathers of ASD subjects	–	–	–	–	46.0 (±34.2) N = 76
Mothers of typical controls	–	–	–	–	28.6 (±20.1) N = 62
Fathers of typical controls	–	–	–	–	34.1 (±23.3) N = 63