Sample characteristics and behavioural results
| Characteristic* | No. participants | Range | Mean ± SD | Pearson R |
|---|---|---|---|---|
| Age, yr | 38 | 23 to 49 | 32.53 ± 7.13 | 0.27 |
| Age at first drunken stupor, yr | 38 | 12 to 18 | 15.16 ± 1.59 | 0.19 |
| Alcohol Dependence Scale Score | 36 | 25 to 54 | 32 ± 7.04 | 0.83† |
| Alcohol-specific failed self-control (ratio of failed self-control rates between alcohol and nonalcohol trials) | 37 | 0.07 to 3.25 | 1.18 ± 0.56 | 0.41‡ |
| AUDIT score | 38 | 2 to 30 | 11.08 ± 7.05 | — |
| No. drinking d/wk in the last mo | 38 | 0.25 to 6 | 2.98 ± 2.04 | 0.48† |
| No. of drinks per drinking d in the last mo | 38 | 3 to 12 | 8.16 ± 2.95 | 0.54† |
| Barratt Impulsiveness Scale score | 38 | 42 to 171 | 69.43 ± 25.37 | 0.13 |
| Beck Depression Inventory score | 35 | 21 to 119 | 27.94 ± 16.27 | 0.11 |
| Edinburgh Handedness Inventory quotient | 38 | 10 to 100 | 81.75 ± 19.53 | 0.05 |
| Interaction effec in response times [(FA − FN) − (SA −SN)] | 37 | −848.53 to 876.82 | −5.7 ± 401.14 | 0.37‡ |
| IQ | 34 | 70.00 to 115.00 | 96.91 ± 10.87 | 0.14 |
| Lifetime Drinking History alcohol intake per mo, g | 38 | 82 to 9465 | 1762 ± 1774 | 0.56† |
| Lifetime Drinking History total alcohol intake, g | 38 | 4861 to 2 754 299 | 390 481 ± 524 030 | 0.51† |
| Response time for FA trials, ms | 38 | 972.57 to 2354.06 | 1499.08 ± 287.90 | 0.36‡ |
| Response time for FN trials, ms | 38 | 934.76 to 2303.95 | 1536.92 ± 316.19 | 0.19 |
| Response time for SA trials, ms | 37 | 996.96 to 3063.50 | 1811.08 ± 479.95 | −0.22 |
| Response time for SN trials, ms | 38 | 994.33 to 3031.50 | 1864.11 ± 438.21 | 0.20 |
| Monetary Choice Questionnaire — Discounting Index score | 38 | 0.0003 to 69 | 0.019 ± 0.019 | 0.20 |
| Obsessive Compulsive Drinking Scale score | 35 | 2 to 28 | 11.09 ± 6.16 | 0.77† |
| Proportion of failed self-control trials in all trials | 38 | 0.11 to 0.98 | 0.72 ± 0.22 | 0.03 |
| State-Trait Anxiety Inventory score | 38 | 45 to 52 | 48.92 ± 1.81 | 0.01 |
| Total abstinence, mo | 36 | 0 to 7 | 1.45 ± 1.95 | 0.16 |
| Total drinking, yr | 38 | 5 to 34 | 16 ± 7 | 0.30 |
| Education, yr | 38 | 10 to 22 | 16.36 ± 2.79 | −0.15 |
AUDIT = Alcohol Use Disorders Identification Test; FA = failed self-control in an alcohol–nonalcohol conflict; FN = failed self-control in a nonalcohol–nonalcohol conflict; SA = successful self-control in an alcohol–non-alcohol conflict; SD = standard deviation; SN = successful self-control in a nonalcohol–nonalcohol conflict.
↵* Eighteen participants were smokers and 20 were not (p = 0.21, 2-sample t test).
↵† Significant at a threshold of p < 0.01.
↵‡ Significant at a threshold of p < 0.05.