Table 2.
Behavioral inhibitory control performance.
| CUD (n = 26) | HC (n = 26) | Significance testb | ||
|---|---|---|---|---|
| Averagea | ||||
| Go RT | 802.48 ± 73.39 Min: 641.51, Max: 909.12 |
777.66 ± 59.03 Min: 640.56, Max: 860.80 |
t(50) = 1.34, P = 0.185 | |
| SSRT | 396.07 ± 52.02 Min: 312.25, Max: 556.25 |
423.66 ± 60.14 Min: 280.25, Max: 616.64 |
t(50) = 1.77, P = 0.083 | |
| Go % | 77.79 ± 9.48 Min: 62.5, Max: 98.96 |
84.17 ± 11.35 Min: 62.5, Max: 100 |
t(50) = 2.20, P = 0.032 | |
| Stop % | 53.43 ± 9.04 Min: 25.00, Max: 70.83 |
56.65 ± 9.10 Min: 37.14, Max: 72.09 |
t(50) = 1.28, P = 0.207 | |
| Drug | ||||
| Go RT | 805.75 ± 80.93 Min: 640.54, Max: 931.86 |
773.47 ± 61.81 Min: 619.23, Max: 860.12 |
t(50) = 1.62, P = 0.112 | |
| SSRT | 409.60 ± 68.37 Min: 241.00, Max: 636.00 |
404.83 ± 91.19 Min: 254.00, Max: 606.89 |
t(50) = 0.21, P = 0.832 | |
| Go % | 77.58 ± 12.07 Min: 54.17, Max: 100.00 |
84.41 ± 11.85 Min: 62.5, Max: 100 |
t(50) = 2.06, P = 0.045 | |
| Stop % | 52.35 ± 10.91 Min: 16.67, Max: 66.67 |
58.45 ± 12.86 Min: 27.87, Max: 83.33 |
t(50) = 1.85, P = 0.071 | |
| Food | ||||
| Go RT | 799.42 ± 70.55 Min: 655.71, Max: 908.67 |
779.67 ± 66.90 Min: 638.64, Max: 874.24 |
t(50) = 1.03, P = 0.305 | |
| SSRT | 388.83 ± 67.55 Min: 219.00, Max: 495.67 |
439.81 ± 66.62 Min: 323.78, Max: 622.67 |
t(50) = 2.74, P = 0.008* | |
| Go % | 78.84 ± 11.35 Min: 55.56, Max: 100.00 |
83.98 ± 13.96 Min: 50.00, Max: 100.00 |
t(50) = 1.46, P = 0.151 | |
| Stop % | 54.38 ± 11.23 Min: 33.33, Max: 83.33 |
55.50 ± 9.52 Min: 33.33, Max: 80.00 |
t(50) = 0.39, P = 0.699 | |
| Threat | ||||
| Go RT | 804.35 ± 83.30 Min: 626.92, Max: 925.00 |
775.37 ± 57.58 Min: 656.21, Max: 880.30 |
t(50) = 1.46, P = 0.151 | |
| SSRT | 395.82 ± 81.20 Min: 209.44, Max: 580.00 |
408.28 ± 80.87 Min: 137.78, Max: 612.44 |
t(50) = 0.55, P = 0.582 | |
| Go % | 76.34 ± 11.66 Min: 50.00, Max: 100.00 |
83.79 ± 12.63 Min: 58.33, Max: 100.00 |
t(50) = 2.21, P = 0.031 | |
| Stop % | 52.62 ± 12.32 Min: 16.67, Max: 83.33 |
57.67 ± 9.23 Min: 44.44, Max: 83.33 |
t(50) = 1.67, P = 0.101 | |
| Neutral | ||||
| Go RT | 802.18 ± 69.55 Min: 642.83, Max: 905.67 |
783.41 ± 60.69 Min: 647.83, Max: 870.04 |
t(50) = 1.04, P = 0.305 | |
| SSRT | 390.03 ± 79.38 Min: 247.83, Max: 540.22 |
441.70 ± 60.76 Min: 371.00, Max: 624.56 |
t(50) = 2.64, P = 0.011* | |
| Go % | 78.42 ± 13.08 Min: 55.56, Max: 100.00 |
84.48 ± 13.60 Min: 50.00, Max: 100.00 |
t(50) = 1.64, P = 0.101 | |
| Stop % | 54.38 ± 9.13 Min: 33.33, Max: 83.33 |
56.08 ± 9.08 Min: 33.33, Max: 72.73 |
t(50) = 0.67, P = 0.503 |
Note: All RT values in milliseconds. ± denotes standard deviation. a Average (i.e. collapsed across all cue types) accuracy and RT values were used for inclusion criteria to abide by the horse-race model assumptions of the stop-signal task (i.e. positive SSRT, Go Accuracy ≥60%, Stop Accuracy between 25–75%). b Significance tests reflect independent samples t-tests for each variable between groups. Because only the SSRT variable was of interest (and yielded a significant Group x Cue interaction), no other RT or accuracy variables are flagged with asterisks when P < 0.05.