. 2009 Dec 29;40(6):751–761. doi: 10.1007/s10803-009-0928-8

Table 4.

Hierarchical regression analysis of DRQ by CA, VIQ, attachment and ToM and their interactions

Predictors	Positive social orientation		Responsiveness		Coordinated play
Predictors	ΔR ²	β	ΔR ²	β	ΔR ²	β
Step 1	.14^b		.23^a		.33^a
CA		.34^c		.26^b		.32^a
VIQ		.16		.40^a		.48^a
Step 2	.07^c		.07^a		.08^b
CA		.31^b		.24^c		.29^b
VIQ		.09		.32^b		.40^a
Nationality		.15		−.07		.12
Disability		.24^c		.26^b		.27^b
Step 3	.04		.00		.00
CA		.34^b		.24^c		.28^b
VIQ		.05		.31^b		.41^a
Nationality		.09		−.08		.13
Disability		.17		.25^c		.29^b
¹IPPA-G		.29^c		.05		−.05
²SA		−.13		−.03		.03
Step 4	.00		.00		.04^c
CA		.34^b		.24^c		.28^b
VIQ		.04		.28^b		.33^b
Nationality		.09		−.06		.18^c
Disability		.16		.23^c		.21^c
IPPA-G		.29^c		.04		−.08
SA		−.12		−.03		.04
³ToM		.013		.07		.23^c
Step 5	.10^b		.05^c		.08^b
CA		.34^a		.19^c		.17^c
VIQ		.17		.30^b		.33^b
Nationality		.13		−.00		.29^b
Disability		.17		.26^c		.25^b
IPPA-G		.24^†		.02		−.15
SA		−.08		−.02		.00
ToM		−.04		−.07		.09
SA × ToM						.20^c
VIQ × ToM				−.27^c		−.26^b
⁴Dis. × CA		.34^b
CA × IPPA-G		−.26^c
R ²		.35^a		.35^a		.53^a

^a p < .001; ^b p < .01; ^c p < .05; ^† p = .06

Note: ¹IPPA-G: global mother–child relationships; ²SA-secure attachment based on the KSS; ³ToM: theory of mind based on second-order false-belief task; ⁴Dis = disability ASD/typical