Table 3.

Mediation Analyses for T4 Drinking Frequency Regressed on T2 and T3 Variables

Model and Measure	β	Df	R2	ΔR2	F for ΔR2
Model 1 (all vars. at T2)		5, 276	.05	.05*	2.65
Age	.02
Education	.06
SES	-.03
Drinking Frequency	.16**
Negative Affectivity	.12*
Model 2:		8, 273	.18	.13**	14.94
Age	.05
Education	.06
SES	-.02
Drinking Frequency (T2)	.10
Negative Affectivity (T2)	.02
Attitudes toward Delinquency (T3)	.15*
Peer Delinquency (T3)	.14
Personal delinquency (T3)	.17*

^*p < .05.

^**p < .01.