. Author manuscript; available in PMC: 2011 Jan 4.

Published in final edited form as: J Educ Psychol. 2008 Feb 1;100(1):67–77. doi: 10.1037/0022-0663.100.1.67

Table 3.

Prediction of GPA and Absences From EC

Predictor	β	SE β	R²	ICC
Predicting spring GPA from EC				.07
Fall GPA	.54^***	.06
Sex	.14^†	.08
SES	.11^*	.06	.47
EC	.51^**	.10	.51
Predicting spring absences from EC				.02
Fall absences	.43^***	.06
Sex	.01	.09
SES	.12^*	.06	.19
EC	−.23^*	.09	.21

Note. EC = children’s effortful control; SES = family socioeconomic status; ICC = intraclass correlation. Betas are unstandardized.

^†

p < .10.

p < .05.

^**

p < .01.

^***

p < .001.