Table 1.
Mean Accuracy, RT (ms), and N2 amplitude (μV) as a Function of Beverage, Previous Trial, and Current Trial Compatibility.
| Current Trial
|
|||||||
|---|---|---|---|---|---|---|---|
| Accuracy
|
RT
|
N2
|
|||||
| Beverage Condition | Previous Trial | C | I | C | I | C | I |
| AC | C | 0.95 | 0.81 | 387 | 437 | 3.30 | 1.56 |
| 0.05 | 0.20 | 36 | 31 | 3.37 | 3.36 | ||
| I | 0.97 | 0.84 | 390 | 439 | 3.44 | 2.92 | |
| 0.04 | 0.19 | 38 | 30 | 3.78 | 3.78 | ||
| AP | C | 0.96 | 0.83 | 396 | 457 | 1.77 | 1.05 |
| 0.03 | 0.13 | 48 | 59 | 2.34 | 2.51 | ||
| I | 0.97 | 0.87 | 405 | 453 | 1.77 | 0.93 | |
| 0.02 | 0.11 | 55 | 56 | 2.79 | 2.17 | ||
| PC | C | 0.98 | 0.88 | 360 | 410 | 1.99 | −0.29 |
| 0.02 | 0.08 | 48 | 48 | 1.92 | 1.71 | ||
| I | 0.99 | 0.91 | 363 | 411 | 2.12 | 0.10 | |
| 0.02 | 0.07 | 48 | 45 | 1.77 | 1.82 | ||
| PP | C | 0.98 | 0.87 | 383 | 448 | 2.50 | 1.63 |
| 0.01 | 0.09 | 52 | 55 | 2.57 | 2.62 | ||
| I | 0.99 | 0.90 | 387 | 440 | 2.24 | 1.79 | |
| 0.01 | 0.07 | 50 | 53 | 2.50 | 2.51 | ||
Note. C = compatible; I = incompatible; AC = alcohol + caffeine; AP = alcohol + placebo caffeine; PC = placebo alcohol + caffeine; PP = placebo alcohol + placebo caffeine. Numbers in italics are standard deviations.