Table 4.

Mean performance on the MRT-C and results of the analyses for boys and girls per grade.

	Boys	Girls
	M (SE)	M (SE)	ηp	p-Values
Grade 2	13.5 (0.50)	11.4 (0.52)	0.06	<0.01∗
Grade 3	15.8 (0.60)	13.8 (0.66)	0.03	<0.03
Grade 4	17.1 (0.53)	14.8 (0.41)	0.07	<0.01∗
Grade 5	17.6 (0.61)	16.8 (0.58)	0.01	0.38
Grade 6	18.4 (0.53)	18.0 (0.41)	0.00	0.51

^∗p-Value ≤ 0.05.