Table 1.

Correlation between Strengths and Difficulties Questionnaire (SDQ) total difficulties, prosocial behaviors and biological and environmental factors

			SDQ. total	SDQ. prosocial
1	TP. Sib AQ	r	0.926**	-0.845**
		p	<0.001	<0.001
2	ASD Sib symptom severity	r	0.289*	-0.332**
		p	0.019	0.007
3	Permissive parenting	r	0.305*	-0.170
		p	0.013	0.176
4	Authoritarian parenting	r	-0.223	0.506**
		p	0.075	<0.001
5	Authoritative parenting	r	-0.390**	0.411**
		p	0.001	0.001
6	Problem Solving	r	-1.00	0.014
		p	0.428	0.910
7	Communication	r	0.411**	-0.592**
		p	0.001	<0.001
8	Roles	r	0.124	0.337**
		p	0.325	0.006
9	Affective Responsiveness	r	0.608**	-0.701**
		p	<0.001	<0.001
10	Affective Involvement	r	0.672**	-0.485**
		p	<0.001	<0.001
11	Behavior Control	r	0.449**	-0.376**
		p	<0.001	0.002
12	General Functioning	r	0.605**	-0.501**
		p	<0.001	<0.001

^**correlation is significant at the 0.01 level (2-tailed).

^*correlation is significant at the 0.05 level (2-tailed).