Table 2.

Time spent on the training in log(min) and effect sizes for the planned t-test comparisons between the different groups of participants

Learning conditions			Planned t-test comparisons
Reading-reading	Reading-quiz	Quiz-reading	Reading-quiz vs.	Quiz-reading vs.	Quiz-reading vs.
			Reading-reading	Reading-quiz	Reading-reading
2.87	3.59	3.76	d = 1.94 [1.59, 2.29]	d = 0.35 [0.05, 0.64]	d = 1.89 [1.54, 2.24]
(0.35)	(0.40)	(0.47)	p < 0.0001	p = 0.011	p = 0.013

Standard deviations are in parentheses. Effect sizes (Cohen’s d) are given with 95% confidence intervals