Table 5.

Correlations: Change in AIM Domains and Change in Concurrent Measures

Measure	Subscale	N	RRB	AB	C	PI	SR
Aberrant Behavior Checklist (ABC)	Lethargy/Withdrawal	340	0.19*	0.25**
	Stereotypic	340	0.14+	0.12
Repetitive Behavior Scale – Revised (RBS-R)	Compulsive	340	0.22**	0.16*
	Stereotyped	341	0.22**	0.16*
	Restricted	332	0.19*	0.14
	Ritualistic	341	0.18*	0.20*
	Sameness	341	0.12	0.20*
	Overall Score	341	0.26**	0.26**
Autism Diagnostic Observation Schedule – 2nd Edition (ADOS-2)	Restricted/Repetitive	349	0.01	−0.01
	Social Affect	349				0.003	0.06
Social Responsiveness Scale-2 (SRS-2)	Restricted/Repetitive	338	0.28**	0.43**
	Social Awareness	338				0.09	0.19*
	Social Communication	338				0.29**	0.31**
	Social Responsiveness	338				0.31**	0.33**
Ohio Autism Clinical Global Impression Scale-Improvement (OACIS-I)	Aberrant/Abnormal	338	0.15*	0.16*
	Restricted Interests	338	0.09	0.12
	Verbal Communication	338			0.13+
	Nonverbal Comm.	338			0.10
Vineland Adaptive Behavior Scales-2	Communication	291			−0.12
	Receptive	286			−0.08
	Expressive	276			−0.18*
	Socialization	284				−0.10	−0.13
	Interpersonal	273				−0.12	−0.13
	Play/Leisure	279				−0.09	−0.06
	Coping Skills	279				−0.06	−0.13
MacArthur Communicative Development Inventory (CDI)	Total Gestures	80			−0.20
	Total Words Produced	80			−0.22
	Total Words Understood	80			−0.17
Pediatric Quality of Life Inventory V4 (PedsQL)	Social Functioning	346				−0.33**	−0.19**

RRB = AIM Repetitive Behavior domain, AB = AIM Atypical Behavior domain, C = AIM Communication domain, PR = AIM Peer Interaction domain, SR = AIM Social Reciprocity domain

For RRB/AB:

^**p = <.0001

^*p = < .004

⁺p = < .01

for C:

^**p = <.0001

^*p = < .006

⁺p = < .01

for PI/SR:

^**p = <.0001

^*p = < .004

⁺p = < .01