Table 1.
Descriptive statistics for errors and RTs
| Behavioral measures | Placebo | Acetaminophen |
|---|---|---|
| Full Sample | ||
| Commission error rate (%) | 33.79 (10.56) | 29.70 (14.96) |
| Omission error rate (%) | 2.62 (2.27) | 5.58 (5.06)*** |
| RT excluding errors (ms) | 198.17 (31.86) | 202.72 (36.19) |
| Post-error slowing (ms) | 91.35 (86.26) | 120.33 (91.54) |
| Sample with unusable ERP participants removed | ||
| Commission error rate (%) | 33.63 (10.51) | 32.28 (14.01) |
| Omission error rate (%) | 2.63 (2.36) | 6.21 (5.07)** |
| RT excluding errors (ms) | 198.56 (32.73) | 198.93 (32.05) |
| Post-error slowing (ms) | 86.6 (85.51) | 122.31 (80.84) |
Note: Mean values are presented, standard deviations are in brackets. RT only includes Go trials. Post-error slowing is the difference between the RT on a Go trial following a NoGo error, vs RT on a Go trial following a NoGo success.
**P < 0.01, ***P < 0.001.