Table 4.
Social Identity as a Moderator of Intervention Efficacy at 6-Month Follow-Up
| Outcome and predictor | b | t | p |
|---|---|---|---|
| Frequency | |||
| BL frequency | .021 | 5.67 | <.001 |
| TXT group | .152 | .79 | .432 |
| Social identity | .045 | .59 | .552 |
| TXT × Identity | .298 | 1.98 | .048 |
| Quantity loss | |||
| BL quantity loss | .005 | 2.77 | .006 |
| TXT group | –.863 | –4.69 | <.001 |
| Social identity | .142 | 2.01 | .045 |
| TXT × Identity | .284 | 1.78 | .074 |
| Quantity won | |||
| BL quantity won | .008 | 3.98 | <.001 |
| TXT group | –.241 | –1.32 | .187 |
| Social identity | .104 | 1.30 | .195 |
| TXT × Identity | .017 | .11 | .911 |
| Problems | |||
| BL problems | .081 | 2.48 | .013 |
| TXT group | –.318 | –.87 | .387 |
| Social identity | .106 | .52 | .603 |
| TXT × Identity | –.293 | –.78 | .437 |
| Norm frequency | |||
| BL frequency norms | .015 | 4.61 | <.001 |
| TXT group | –.142 | –.91 | .365 |
| Social identity | –.141 | –2.43 | .015 |
| TXT × Identity | .077 | .66 | .512 |
| Norm quantity- loss | |||
| BL quantity loss norms | .303 | 8.06 | <.001 |
| TXT group | –.426 | –3.22 | <.001 |
| Social identity | –.030 | –.59 | .557 |
| TXT × Identity | –.085 | –.81 | .419 |
| Norm quantity- win | |||
| BL quantity win norms | .390 | 10.04 | <.001 |
| TXT group | –.614 | –4.61 | <.001 |
| Social identity | –.081 | –1.45 | .147 |
| TXT × Identity | –.185 | –1.65 | .099 |
Note. Treatment group was coded 0 (control) and 1 (intervention). Estimates for main effects were derived from a main-effects only model and the interaction estimates come from the full model. Significant interactions are bolded. BL = Baseline; TXT = Treatment.