Table 4.

Multiple Regression Analyses Predicting Post-drinking Inhibition Performance as a Function of Baseline Performance, Beverage Variables and Sex and (for Descending Limb) Whether Tasks were Completed during Ascending BAC.

	Antisaccade		Stroop RT		Stroop Inc. acc.		SSRT
	Adj R2	b	Adj R2	b	Adj R2	b	Adj R2	b
Ascending limb (N = 109)	0.60***		0.21**		0.18***		0.06*
Step 1: Main effects
Baseline performance		.77***		.33***		.49***		.26**
Sex		.00		−4.41		.01		−7.36
Alcohol		−.08**		−12.34		−.03		−.45
Expectancy		.02		−14.02		.01		−7.58
Step 2: Interaction1	0.01*		0.01		−0.01		−0.01
Alcohol x Baseline		−.30*		−.20		−.12		−.08
Descending limb (N = 216)	0.53***		0.21**		0.15***		0.04*
Step 1: Main effects
Baseline performance		.79***		.42***		.37***		.21**
Sex		−.01		−4.45		.02		−0.39
Alcohol		−.10**		−2.07		−.04**		14.83*
Expectancy		.00		0.23		.02		−.31
Limb condition		−.02		−0.30		.02		−1.78
Step 2: Interactions1	0.01*		0.02*		.00		0.01
Alcohol x Limb condition		−.02		13.42		−.05		−13.78
Alcohol x Baseline		−.28*		−.27*		.05		0.19

Note. Antisaccade = accuracy in naming a digit appearing opposite a cued location; Stroop RT = reaction time interference effect (incongruent trial RT minus asterisk trial RT); Stroop Inc. acc. = color-naming accuracy on incongruent Stroop trials; SSRT = stop-signal reaction time. Alcohol = dummy-coded variable testing pharmacological effects of alcohol (alcohol group vs. placebo group). Expectancy = dummy-coded variable testing the expectancy effect (placebo group vs. control group). Limb condition = whether or not tasks were completed on the ascending limb (0 = no [D-only group]; 1 = yes [A/D group]).

^***p < .001;

^**p < .01;

^*p < .05.

¹The adjusted R² value given for Step 2 represents the change resulting from inclusion of the interaction terms.