Table 1.

Group differences in alcohol problems and antisocial behavior at 12-month assessment, and inhibitory control tasks in fourth and sixth grade

	Nonalcoholic				Alcoholic
	Boys		Girls		Boys		Girls
Variable	M	SD	M	SD	M	SD	M	SD
Paternal QFI	0.34a	0.69	0.22b	0.3	1.4a	1.14	1.54b	1.26
Paternal heavy drinking	0.48a	0.75	0.54b	0.93	3.4a	1.89	3.13b	1.81
Paternal alcohol symptoms	0.11a	0.29	0.19b	0.49	14.11a	22.35	7.52b	7.98
Antisocial behavior	-3.43a	7.4	-3.76b	5.03	3.34a	9.65	1.75b	6.85
Stroop interference 4th	51.33c	7.39	55.64c	9.42	53.62	7.58	52.51	6.95
Stroop interference 6th	49.65ac	6.74	52.93c	6.79	55.78ad	5.98	50.35d	5.54
TOL standard score 4th	93.5	16.56	88.97	13.53	94.06	16.01	88.43	17.89
TOL standard score 6th	98.26	13.9	97.29	11.86	91.53	16.28	95.27	12.83
SSRT 4th	342.01	119.66	319.45	120.18	328.07	116.29	378.41	158.45
SSRT 6th	319.19	134.23	300.00	120.23	278.31	107.1	302.97	121.4

Notes: Means with same superscripts are significantly different. Paternal heavy drinking was defined by a five-item measure that assessed the frequency of drinking six or more drinks, getting drunk, blacking out, passing out, and getting sick (standardized). Paternal alcohol symptoms were defined by how many times a problem had been experienced. QFI = Quantity–Frequency Index for alcohol consumption (number of occasions in past 30 days in which had 7–10 drinks); TOL = Tower of London task; SSRT = stop-signal reaction time task.

^aRepresents significant differences between FA and NA boys;

^bFather alcoholic (FA) and nonalcoholic (NA) girls;

^cNA boys and girls;

^dFA boys and girls.