Table 1.

Intrinsic academic motivation scores in the six grades

	Elementary school			Junior high school
	4th grade	5th grade	6th grade	7th grade	8th grade	9th grade
Intrinsic academic motivation score	90.4 ± 14.7	89.6 ± 13.4	88.4 ± 14.1	82.4 ± 0.5*	81.2 ± 12.9*	83.5 ± 11.7#

Values are presented as the mean ± SD. * p < .05, significantly different from the corresponding values for the 4th-grade group; ^#p < .1, different from the corresponding values for the 4th-grade group (one-way analysis of variance, followed by Student's t-test with Bonferroni correction).