. Author manuscript; available in PMC: 2009 Sep 1.

Published in final edited form as: Accid Anal Prev. 2008 Jun 20;40(5):1661–1666. doi: 10.1016/j.aap.2008.05.007

Table 3.

Summary of Hierarchical Multiple Regressions (N=316)

Aggressive Driving Behavior

Variable	R²	ΔR²	β
Step 1	.01
Miles			.01
Gender			.03
Age			−.02
Step 2	.17	.16^**
DAS			.39^**
Step 3	.22	.05^**
TFS			−.18^**
CFC			−.11^*

Physically Aggressive Expression

Variable	R²	ΔR²	β

Step 1	.00
Miles			.03
Gender			−.02
Age			.01
Step 2	.05	.05^**
DAS			.21^**
Step 3	.14	.09^**
TFS			−.18^**
CFC			−.20^**

Using the Vehicle for Aggressive Expression

Variable	R²	ΔR²	β

Step 1	.00
Miles			.04
Gender			−.06
Age			−.09
Step 2	.18	.16^**
DAS			.38^**
Step 3	.25	.07^**
TFS			−.17^**
CFC			−.17^**

Adaptive/Constructive Expression

Variable	R²	ΔR²	β

Step 1	.01
Miles			−.06
Gender			−.04
Age			.08
Step 2	.04	.03^**
DAS			.18^**
Step 3	.09	.05^**
TFS			.10
CFC			.19^**

Verbally Aggressive Expression

Variable	R²	ΔR²	β

Step 1	.01
Miles			.01
Gender			−.01
Age			.09
Step 2	.21	.20^**
DAS			.42^**
Step 3	.26	.05^**
TFS			−.21^**
CFC			−.05

p < .05

^**

p < .01

Note. TFS = Trait Forgiveness Scale; CFC = Consideration of Future Consequences; DAS = Driving Anger Scale.