Table 2.

Relationship of GM-Capacity to Comprehension

	Variable	B	β	SE	R 2	ΔR2
Pretest	Step 1				.18	.18***
	Constant	1.58		0.48**
	GM-Capacity	0.57	0.30	0.11***
	Age Group	0.89	0.36	0.14***
	Step 2				.18	0.0
	Constant	1.62		0.70*
	GM-Capacity	0.56	0.29	0.16***	.05***
	Age Group	0.81	0.33	0.94
	GM-Capacity × Age Group	0.02	0.03	0.21
Posttest	Step 1				.21	.21***
	Constant	1.70		0.39***
	GM-Capacity	0.58	0.34	0.09***
	Age group	0.90	0.37	0.13***
	Step 2				.22	.01
	Constant	1.68		0.56**
	GM-Capacity	0.59	0.35	0.13***	.08***
	Age group	0.93	0.38	0.75
	GM-Capacity × Age Group	−0.01	−0.01	0.18

Note.

^*p < .05

^**p < .01

^***p < .001.