Table 7.

Findings as regards the equivalence of groups

	Groups	N	$\overline{X}$	Sd	df	t	p
Listening	Exp.	29	14,65	3,993	57	−1,030	,308
	Control	30	15,83	4,749
Reading	Exp.	29	9,965	5,454		,284	,777
	Control	30	9,566	5,328
Writing	Exp.	29	6,448	5,748		−,244	,808
	Control	30	6,766	4,166
Speaking	Exp.	29	7,103	2,703		,481	,633
	Control	30	6,733	3,183
Academic Achv. Total	Exp.	29	38,17	12,01		−,278	,782
	Control	30	39,06	12,63
Attitudes	Exp.	29	107,82	20,98		1,064	,292
	Control	30	102,66	16,02