. Author manuscript; available in PMC: 2012 May 1.

Published in final edited form as: Pers Individ Dif. 2011 May 1;50(7):1104–1109. doi: 10.1016/j.paid.2011.01.035

Table 3.

Subjective Educational Investment and Committed Relationship Status Moderate Sample-wide Prediction of Recent Alcohol Use

	Recent Alcohol Use
	Two-week Alcohol Drink Quantity				Two-week Alcohol Drink Frequency (in days)				Two-week Alcohol Drink Duration (in hours)
	B	β	r²	Δr²	B	β	r²	Δr²	B	β	r²	Δr²
Step 1
Sex	−11.17^*	−.17^*			--	--			--	--
Shipley IQ	−4.94^*	−.15^*			−.43^*	−.15^*			−2.49^*	−.17^*
MPQ control	−13.95^*	−.42^*	.23	--	−1.21^*	−.41^*	.20	--	−5.58^*	−.38^*	.19	--
Step 2
Sex	−10.34^*	−.15^*			--	--			--	--
Shipley IQ	−5.12^*	−.15^*			−.45^*	−.15^*			−2.58^*	−.17^*
MPQ control	−12.69^*	−.38^*			−1.06^*	−.36^*			−5.03^*	−.34^*
Subjective educational investment	−2.78	−.08			−.39	−.13			−1.44	−.10
Committed relationship status	−4.64	−.07	.25	.01	−.37	−.06	.22	.02	−1.57	−.05	.20	.01
Step 3
Sex	−8.77	−.13			--	--			--	--
Shipley IQ	−4.39	−.13			−.40^*	−.13^*			−2.31^*	−.16^*
MPQ control	−12.99^*	−.39^*			−1.09^*	−.37^*			−5.16^*	−.35^*
Subjective educational investment	−6.07^*	−.18^*			−.66^*	−.22^*			−2.76^*	−.19^*
Committed relationship status	−4.85	−.07			−.40	−.07			−1.72	−.06
Subjective educational investment × Committed relationship status	10.60^*	.17^*	.27	.02^*	.93^*	.17^*	.24	.02^*	4.50^*	.17^*	.22	.02^*

Note.

Bs and βs, as well as change in F scores related to corresponding changes in r² between models, p < .05. Sex scored 0 = male, 1= female. Committed relationship status scored 0 = single, 1 = in a committed relationship. All continuous variables were standardized (z-scored) prior to entry into the models. Bs are interpretable in outcome units (number of drinks, number of days, or number of hours).