Table II.

Hierarchical multiple regression analysis using physical trauma and PTSD symptoms to predict psychopathy severity

	Block 1			Block 2			Block 3
Predictor	B	SE B	β	B	SE B	β	B	SE B	β
Gender	−5.90	3.20	−0.20	−3.74	3.23	−0.12	−3.89	3.22	−0.13
Physical trauma				10.50	4.22	0.27*	9.68	4.27	0.25*
PTSD symptoms							0.15	0.12	0.13
Model parameters
R 2		0.04			1.04			0.12
ΔR 2		0.04			0.07			0.02
F for ΔR2		3.40			6.18*			1.45

Notes: B, unstandardized slope coefficient; SE B, standard of B; β, standardized slope coefficient.

^*p ⩽ 0.05;

^**p ⩽ 0.01;

^***p ⩽ 0.001