The comparative impacts of portfolio-based assessment, self-assessment, and scaffolded peer assessment on reading comprehension, vocabulary learning, and grammatical accuracy: insights from working memory capacity

Language Testing in Asia

Table 7 Pairwise comparisons

Dependent variable	(I) WM	(J) WM	Mean difference (I-J)	Std. error	Sig	95% Confidence interval for difference
Dependent variable	(I) WM	(J) WM	Mean difference (I-J)	Std. error	Sig	Lower bound	Upper bound
Reading pretest Score	High	Low	− .157	.226	.488	− .604	.290
Reading pretest Score	Low	High	.157	.226	.488	− .290	.604
Reading post-test score	High	Low	2.611	.695	.000	1.235	3.987
Reading post-test score	Low	High	− 2.611	.695	.000	− 3.987	− 1.235