Table 3.

Pearson correlations coefficients between Impulsive/Premeditated Aggression Scale (IPAS), Barratt Impulsiveness Scale, 11th version (BIS-11), and Psychopathic Checklist Revised (PCL-R).

		IPAS subscales
Measures	Subscales	IA	PM
BIS-11	Total score	0.21**	0.20**
	Attentional	0.14*	0.18*
	Motor	0.26**	0.27**
	Non-planning	0.15*	0.06
PCL-R	Total score	0.01	0.29**
	Interpersonal	−0.14	0.24*
	Affective	−0.14	0.16*
	Lifestyle	−0.07	0.22*
	Antisocial	−0.07	0.21*

The study used 240 participants for correlations between IPAS and BIS-11; and a subsample of 134 participants for correlations between IPAS and PCL-R.

IA, impulsive aggression; PM, premeditated aggression.

*p < 0.05; **p < 0.01.