Table 3.
GEE models of substance group and extraversion effects on average number of clicks (EEfRT)
| Effect | β | se | χ² | p |
|---|---|---|---|---|
| Model 5 | ||||
| Substance | −4.16 | 1.54 | 7.26 | .007 |
| Model 6 | ||||
| Substance | −5.12 | 2.49 | 4.21 | .040 |
| Substance × Reward Magnitude | 0.32 | 5.67 | 0.32 | .573 |
| Model 7 | ||||
| Substance | −6.76 | 2.69 | 6.34 | .012 |
| Substance × Probability 50%a | 3.69 | 2.33 | 2.51 | .113 |
| Substance × Probability 88%a | 4.12 | 2.63 | 2.46 | .117 |
| Model 8 | ||||
| Extraversion | 1.71 | 0.80 | 4.52 | .034 |
| Model 9 | ||||
| Extraversion | 1.10 | 1.14 | 0.94 | .333 |
| Extraversion × Reward Magnitude | 0.20 | 0.28 | 0.53 | .468 |
| Model 10 | ||||
| Extraversion | 3.82 | 1.53 | 6.22 | .013 |
| Extraversion × Probability 50%a | −3.21 | 1.45 | 4.20 | .027 |
| Extraversion × Probability 88%a | −3.13 | 1.53 | 4.90 | .041 |
| Model 11 | ||||
| Substance | −4.27 | 1.52 | 7.92 | .005 |
| Extraversion | 1.33 | 1.16 | 1.32 | .252 |
| Substance × Extraversion | 0.83 | 1.54 | 0.29 | .593 |
| Model 12 | ||||
| Substance | −20.28 | 14.89 | 1.86 | .173 |
| Substance × MaxMot-L | 0.26 | 0.18 | 2.12 | .145 |
| Substance × MaxMot-R | −0.11 | 0.15 | 0.55 | .457 |
Note. All models included probability (categorical), reward magnitude, trial number, block, hand as within-subjects variables, and MaxMot-L and MaxMot-R as between subject variables; χ² = Wald chi-square; β = regression coefficient; significant effects in bold.
a
Reference category: 12% probability.