| Variable |
Group |
Dose |
|
|
|
| |
|
placebo |
caffeine 150 |
caffeine 300 |
d-amph 20 |
| accuracy * |
control |
0.56 |
0.55 |
0.56 |
0.61 |
| |
|
(0.02) |
(0.03) |
(0.02) |
(0.02) |
| |
cocaine |
0.54 |
0.56 |
0.58 |
0.56 |
| |
|
(0.01) |
(0.02) |
(0.02) |
(0.02) |
(acquisition phase) on the probabilistic feedback selection task across placebo,
150 mg caffeine, 300 mg caffeine, and 20 mg d-amphetamine doses. Data are
were collected approximately 75 min after dosing, and are shown separately for the
control and cocaine-dependent groups
* = p < .05 main effect of dose, see text for details |
