Table 3.

Differences in Communication Motives.

	Family History of Alcohol Problems
	Yes		No
PMACS Subscale	M	SD	M	SD	t	df	P	d
Prevention	5.15	1.28	4.71	1.38	4.11	631	<0.001*	0.33
Reactive	1.95	1.29	1.92	1.29	0.34	631	0.731	0.03
Teaching	5.63	1.07	5.58	1.08	0.61	631	0.539	0.05
Relational	3.62	1.30	3.65	1.26	− 0.28	631	0.781	− 0.02
Family History	5.26	1.55	3.29	1.71	15.13	627.75	<0.001*	1.20
	Child’s Age
	Under 21		21 or Older
PMACS Subscale	M	SD	M	SD	t	df	P	d
Prevention	5.18	1.25	4.76	1.39	3.90	631	<0.001*	0.32
Reactive	1.90	1.37	1.96	1.23	− 0.58	631	0.560	− 0.05
Teaching	5.53	1.09	5.66	1.06	−1.58	631	0.115	− 0.13
Relational	3.74	1.31	3.55	1.26	1.82	631	0.069	0.15
Family History	4.31	1.91	4.23	1.91	0.54	631	0.590	0.04
	Parent Sex
	Male		Female
PMACS Subscale	M	SD	M	SD	t	df	P	d
Prevention	4.65	1.43	4.98	1.33	− 2.18	631	0.030	− 0.25
Reactive	2.48	1.54	1.85	1.26	3.73	114.18	<0.001*	0.48
Teaching	5.21	1.25	5.68	1.03	− 3.90	631	<0.001*	− 0.44
Relational	3.99	1.27	3.57	1.28	2.95	631	0.003	0.33
Family History	4.23	1.83	4.27	1.92	− 0.19	631	0.848	− 0.02
	Dominant Type of Alcohol Communication
	Zero Tolerance		Harm-reduction
PMACS Subscale	M	SD	M	SD	t-value	df	P-value	d
Prevention	5.67	1.14	4.49	1.30	11.16	436.85	<0.001*	0.95
Reactive	1.86	1.341	1.87	1.21	− 0.11	558	0.913	− 0.01
Teaching	5.20	1.14	5.90	0.90	− 7.40	321.42	<0.001*	− 0.71
Relational	3.67	1.28	3.54	1.24	1.25	558	0.211	0.11
Family History	4.55	1.85	4.07	1.96	2.78	558	0.006	0.25

Notes. M = Means; SD = Standard Deviation; df = degrees of freedom; d = Cohen’s d

^*p < .002.