Table 1.

(A) Experimental group – pre- vs. post-testing. (B) Control group – pre- vs. post-testing. (C) Post-testing control vs. experimental groups.

(A)
	Pre-testing			Post-testing			t	p	% Change†
	N	M	∂	N	M	∂
Brown	60	67.11	16.87	60	53.42	16.02	5.25	0.000005	0.79
IM	97	194.44	1.42	97	89.84	0.96	74.71	0.000001	0.54
WIAT word reading	38	3.34	2.75	38	5.31	3.2	2.94	0.01	0.62
WIAT math reasoning	122	3.2	48.06	122	5.6	5.67	0.55	**	0.56
WIAT spelling	119	3.2	3.36	119	5.6	2.85	4.07	0.0005	0.57
WIAT written expression	119	2.8	3.16	119	5.8	3.3	17.64	0.000001	0.52
WIAT listening comp.	121	3.2	17.31	121	6.1	2.74	8.52	0.000001	0.85
WIAT oral	117	2.7	3.02	117	6.1	4.05	10.62	0.000001	0.56
(B)
	Pre-testing			Post-testing			t	p	% Change†
	N	M	∂	N	M	∂
Brown	39	75.95	13.01	39	80.03	11.56	18.54	0.0005	0.05
IM	37	4.98	2.55	37	5.58	2.21	2.00	**	0.11
WIAT word reading	28	3.31	3.31	28	3.69	3.47	0.18	**	0.12
WIAT math reasoning	34	3.06	3.26	34	3.38	3.25	0.08	**	0.09
WIAT spelling	32	2.90	3.35	32	2.91	3.13	0.01	**	0.01
WIAT written expression	32	3.11	3.40	32	2.99	3.48	0.16	**	−0.04
WIAT listening comp.	34	2.37	3.29	34	3.05	3.49	0.81	**	0.08
WIAT oral	33	3.03	3.53	33	2.86	3.63	0.21	**	−0.06
(C)
	Experimental			Control			t	p	% Diff.†
	N	M	∂	N	M	∂
Brown	60	53.42	16.02	39	80.03	11.56	14.38	0.0005	0.67
IM	97	89.84	0.96	37	5.58	2.21	77.3	0.0005	0.94
WIAT word reading	38	5.31	3.2	28	3.69	3.47	2.21	0.01	0.69
WIAT math reasoning	122	5.6	5.67	34	3.38	3.25	2.96	0.001	0.60
WIAT spelling	119	5.6	2.85	32	2.91	3.13	4.40	0.0005	0.52
WIAT written expression	119	5.8	3.3	32	2.99	3.48	5.97	0.0005	0.52
WIAT listening comp.	121	6.1	2.74	34	3.05	3.49	7.09	0.0005	0.50
WIAT oral	117	6.1	4.05	33	2.86	3.63	5.22	0.0005	0.47

^†Change>2 grade levels within the 12-week program.

**Not significant.