Table 5.

Between groups and pre- and post-test comparisons for lexical complexity.

Lexical complexity		Diversity			Density			Sophistication
Between groups (Pre-test: one way ANOVA, posttest: Kruskal Wallis test)	p < 0.05	Control vs. Icourse	Control vs. Icourse+Pigai	Icourse vs. Icourse+Pigai	Control vs. Icourse+Pigai	Control vs. Icourse+Pigai	Icourse vs. Icourse+Pigai	Control vs. Icourse	Control vs. Icourse+Pigai	Icourse vs. Icourse+Pigai
	Pre-test	0.204	0.338	0.027	0.286	0.968	0.270	0.294	0.368	0.876
	Post-test	/	/	/	0.623	0.069	0.020	/	/	/
Pretest and posttest (independent t-test)	p < 0.05	Pretest vs. Posttest			Pretest vs. Posttest			Pretest vs. Posttest
	Control	0.881			0.874			0.254
	Icourse	0.016			0.003			0.000
	Icourse+Pigai	0.002			0.013			0.102