Exploring the relation between high-activity COMT Val158Met genotype and psychopathy in male offenders

Figures & data

Table 1. Group descriptives, results of rank correlations, analysis of variance (controlled for age) and Kruskal–Wallis test

COMT (rs4680)	Met/Met				Val/Met				Val/Val
Psychopathy measures	n	M	SD	Mdn	n	M	SD	Mdn	N	M	SD	Mdn	rs	p	F(df)	p	H(df)	p
PCL-R	56	21.0	7.9	23	96	20.9	7.8	22	31	20.5	8.4	22	.021	.782	.15 (3, 179)	.857	.64 (2)	.725
Facet 1	56	2.7	2.1	3	96	3.0	2.0	3	31	2.6	1.9	2	.009	.899	.46 (3, 179)	.632	.17 (2)	.920
Facet 2	56	4.7	2.2	5	96	4.9	2.2	5	31	4.6	2.2	4	.004	.956	.26 (3, 179)	.771	.50 (2)	.781
Facet 3	56	5.8	2.8	6	96	5.6	2.6	6	31	5.6	2.7	6	−.026	.730	.35 (3, 179)	.707	1.36 (2)	.507
Facet 4	56	5.7	2.9	6	96	5.1	3.1	5	31	5.4	3.2	6	−.051	.493	.58 (3, 179)	.559	2.30 (2)	.317
TriPM	56	91.3	30.8	94	96	83.6	30.5	83	28	80.9	29.6	78	−.130	.083	.46 (3, 176)	.634	1.88 (2)	.390
Disinhibition	56	32.1	14.8	34	96	29.2	15.3	31	28	27.9	13.7	28	−.100	.183	.16 (3, 176)	.851	1.93 (2)	.381
Boldness	56	35.5	7.8	36	96	33.2	8.6	32	28	33.4	10.3	35	−.100	.180	.99 (3, 176)	.374	4.26 (2)	.119
Meanness	56	23.7	15.3	23	96	21.2	15.0	20	28	19.6	13.1	16	−.087	.244	.09 (3, 176)	.917	2.47 (2)	.291
Associated measures
ASRS	56	36.0	19.0	37	95	32.5	17.19	32	28	33.0	16.0	36	−.072	.339	.41 (3, 175)	.666	.71 (2)	.702
CWIT 3	28	63.6	20.4	61	50	57.7	14.8	54	23	59.3	23.4	48	−.141	.160	1.39 (2, 97)	.253	2.44 (2)	.295
CWIT 4	28	73.6	27.5	67	50	65.7	18.4	61	23	66.4	16.6	62	−.052	.606	1.38 (3, 97)	.256	.42 (2)	.812
Digit span	28	23.4	4.5	24	50	24.7	4.3	25	23	25.4	6.2	27	.164	.102	1.21 (3, 97)	.302	1.78 (2)	.411
SSRT	26	294.8	41.7	292	46	313.3	44.8	314	22	304.4	38.7	293	.069	.512	1.11 (3, 90)	.334	4.29 (2)	.117

ASRS Adult ADHD self-report scale; CWIT 3 and 4 Color Word Interference Test condition 3 and 4 (Delis et al., 2007); Digit Span (Wechsler, 2010); SSRT Stop signal reaction time Stop it! (Verbruggen et al., 2008).

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