Table 4.

Hierarchical linear regression analysis results of test score.

	Factors	Adjusted R2	ΔR2	ΔF	SE	β	t
Learner characteristics	Interests	0.126	0.166	4.088*	1.980	0.257	1.736
	Prior GPA				0.048	0.180	1.383
Pre-class behaviors	Post length	0.184	0.094	2.469	0.004	−0.272	−1.496
	Post quality				0.108	0.116	0.624
In-class behaviors	Interaction behaviors	0.288	0.127	3.849*	0.139	−0.315	−2.259*
	Irrelevant behaviors				0.778	−0.225	−1.718

Note: *p < 0.05, ***p < 0.001; SE: Standard Error.