Table 3.

Regression Analyses Demonstrating Relationships between Psychopathy Factors and Striatal Regions (n=88)

	Striatum Measures
	Total Striatum	Caudate Body		Caudate Head		Lenticular Nucleus
	Total Striatum	Left	Right	Left	Right	Left	Right
Total Psychopathy	.23^*	.14	.21^*	.15	.08	.22^*	.17^†
Factor 1 Affective-Interpersonal	.27^*	.23^*	.28^**	.12	.10	.23^*	.20^†
Facet 1 (Interpersonal)	.22^*	.21^*	.29^**	.11	.08	.17	.12
Facet 2 (Affective)	.27^*	.21^*	.22^*	.11	.09	.25^*	.23^*
Factor 2 Impulsive Antisocial	.22^*	.12	.18^†	.13	.07	.21^*	.20^*
Facet 3 (Lifestyle)	.23^*	.08	.13	.22^*	.18^†	.19^†	.12
Impulsivity / Stimulation-Seeking	.26^**	.02	.12	.30^**	.22^*	.20^*	.12
Facet 4 (Antisocial)	.16^†	.13	.18^†	.03	.03	.19^†	.23^*

^†

p<.10

p<.05

^**

p<.01

Note: Summary of estimates from multiple regression models predicting striatum region volumes from psychopathy scores, age, sex, ethnicity, and substance and alcohol dependence. Numbers indicate standardized beta (β). Positive β indicates higher volumes for individuals higher in psychopathy. Exploratory analyses of the subregions of the striatum were performed to further probe the relationships between the psychopathy factors and total striatum volumes. Results were not corrected for multiple comparisons and should be considered preliminary.