this research. This research also used Cohen’s d to evaluate the effect size (Cohen, 1988). The post-test scores of the LPI of students with
a high level of self-regulated learning and of students with a low level of self-regulated learning were analyzed to understand how students
used self-regulatory learning behaviors to perform self-regulated learning in the N-WBT and PDA-WATA groups. Based on the definition of
Cohen, this research categorizes Cohen’s d smaller than 0.20 as small effect size, Cohen’s d ranging between 0.20 and 0.50 as small to
medium effect size, Cohen’s d ranging between 0.50 and 0.80 as medium to large effect size and Cohen’s d larger than 0.80 as large effect
size.