Table 2. Analysis of Reading Comprehension Score.

	Main effects model					Final model
Effect	Estimate	Std. Err.	DF	t Value	p value	Estimate	Std. Err.	DF	t Value	p value
Intercept	2.49	6.54	201	0.38	0.7041	−3.91	5.51	217	−0.71	0.4785
method	−0.32	0.42	203	−0.75	0.4548	4.92	2.09	202	2.35	0.0196
PD	−0.10	0.09	200	−1.03	0.3044
SW	0.34	0.08	200	4.41	<.0001	0.30	0.07	202	4.47	<.0001
VA Span	1.66	1.03	200	1.61	0.108	2.16	1.04	241	2.09	0.038
method*VA Span						−1.59	0.62	202	−2.55	0.0114

Notes to Table 2: N(subjects)  = 103; N(observations)  = 410.