Table 2.

Comparison of analytic variables.

Measure	FH −			FH +			t	P	Holms-Bonferroni p*	Cohen’s d
	N	Mean	SE	N	Mean	SE
Education, yrs	679	15.50	0.08	707	14.69	0.08	6.81	0.0000	0.0000	0.366
Childhood SES	631	48.87	0.49	645	42.05	0.54	9.30	0.0000	0.0000	0.523
ELA	588	0.51	0.03	586	1.17	0.03	−15.34	0.0000	0.0000	0.906
BDI	543	5.13	0.24	629	9.12	0.34	−9.59	0.0000	0.0000	0.579
CPI-So	677	31.59	0.20	703	27.35	0.23	14.10	0.0000	0.0000	−0.766
Shipley Mental Age	616	17.47	0.07	677	17.06	0.06	4.41	0.0000	0.0004	0.246
PPI Factor 1	665	16.82	0.13	685	16.54	0.12	1.57	0.1159	1.0000	0.086
PPI Factor 2	665	12.28	0.09	685	13.21	0.10	−6.88	0.0000	0.0000	0.376
EPI-extraversion	646	12.82	0.14	671	12.32	0.16	2.33	0.0200	0.4072	0.129
EPI-neuroticism	646	6.10	0.16	671	8.36	0.18	−9.29	0.0000	0.0000	0.514
EPI-impulsivity	646	4.05	0.07	671	4.33	0.08	−2.59	0.0097	0.2227	0.143
TPQ-novelty seeking	667	15.49	0.19	684	16.44	0.21	−3.34	0.0009	0.0226	0.183
TPQ-harm avoidance	667	9.90	0.24	684	12.54	0.27	−7.31	0.0000	0.0000	0.400
TPQ-reward dependence	667	19.26	0.18	684	18.92	0.17	1.39	0.1636	1.0000	0.076
Delay discounting (log k)	611	−4.52	0.06	679	−4.11	0.05	−5.40	0.0000	0.0000	0.300

Notes. Cohen’s d values are expressed as FH+ > FH−. SE = standard error. SES = socioeconomic status. ELA = early life adversity. BDI = Beck Depression Inventory. CPISo = socialization scale from the California Personality Inventory. Shipley Mental Age = estimated mental age from the Shipley Institute of Living scale. PPI = Psychopathic Personality Inventory. EPI = Eysenck Personality Inventory. TPQ = Tridimensional Personality Inventory.

Variables with Cohen’s d values of 0.2 or greater are indicated with bold text.

^*Holms-Bonferroni is a p-value adjustment that corrects for familywise error rate.