Table 1.

Results of the 2 (pretest, posttest) × 2 (comparison, intervention) ANOVA tests.

Measure	Time				Group				Group × time
	F	df	p	Partial η2	F	df	p	Partial η2	F	df	p	Partial η2
TN	375.09	(1, 190)	<.001	.66	.04	(1, 190)	.85		4.12	(1, 190)	.03	.02
E%	67.88	(1, 190)	<.001	.26	.35	(1, 190)	.56		.18	(1, 190)	.77
CP	500.15	(1, 190)	<.001	.73	.31	(1, 190)	.58		5.22	(1, 190)	.02	.03

Note. TN = total number of items processed; E% = percentage of errors; CP = concentration performance.