Table 3.

Principal components analysis of social responsiveness scale data

Component	ASD, non-ASD, and TD groups (n = 475)
	Total	% of variance	Cumulative%
1	18.928	29.120	29.120
2	3.851	5.925	35.045
3	3.152	4.850	39.895
4	1.926	2.963	42.858
5	1.701	2.616	45.474

ASD, autism spectrum disorders; TD, typical development.

The clinical sample consisted of participants with ASD (n = 257) and non-ASD (n = 157).