Table 7.

Hierarchical regression for joint attention predicting the low verbal autism spectrum disorder group's shape bias at Visit 4 (n = 14).

Final model	B	SE (B)	β	ΔR2
Predicting shape bias V4 a
Mullen Visual Reception V1	< 0.01	< 0.01	0.01285269
Mullen Receptive Language V1	< −0.01	< 0.01	−0.4054149
IJA duration b	< 0.01	< 0.01	0.79723039	0.5114*
Predicting shape bias V4 c
Mullen Visual Reception V1	< −0.01	< 0.01	−0.1262722
Mullen Receptive Language V1	< −0.01	< 0.01	−0.2297866
PA duration d	< −0.01	< 0.01	−0.7868704	0.4726*

Note. V4 = Visit 4; V1 = Visit 1; IJA = initiating joint attention; PA = passive attention.

^a F(3, 10) = 4.66, d = 1.26.

^b t stat = 3.50, p = .006.

^c F(3, 10) = 3.98, d = 1.14.

^d t stat = −3.22, p = .009.

^* p < .05.