Appendix.

Cross-Report (Phenotypic) Correlations Among the Two Psychopathy Factors and Reactive and Proactive Aggression

	Caregiver reports
Twin self-reports	Callous and disinhibited	Manipulative and deceitful	Reactive aggression	Proactive aggression
Callous and disinhibited	.24**	.06*	.15**	.12**
Manipulative and deceitful	.18**	.14**	.10**	.13**
Reactive aggression	.16**	.16**	.22**	.12**
Proactive aggression	.18**	.15**	.16**	.20**

Note. Correlations presented are on nontransformed data.

^*p < .05.

^**p < .01.