Table 2. Impact of demographic variables on individual decision in the DG and the PD before and after exclusion of subjects. We used logistic regression and report the β-value, its standard error, and its significance level. Females donate significantly more than males in the DG. Borderline positive effects of age on altruism in the DG and education on cooperation in the PD were also noted.
| DG | DG Exc | PD | PD Exc | |
|---|---|---|---|---|
| dec | ||||
| sex | .671*** | .594** | .136 | .060 |
| (.18) | (.19) | (.30) | (.30) | |
| age | .015* | .017 | −.001 | −.004 |
| (.01) | (.01) | (.01) | (.01) | |
| education | −.092 | −.150 | .209 | .278* |
| (.08) | (.08) | (.14) | (.14) | |
| Constant | −1.140* | −.711 | −1.886* | −1.994* |
| (.46) | (.48) | (.81) | (.84) | |
| Pseudo R2 | .029 | .029 | .010 | .015 |
| No. of cases | 340 | 316 | 232 | 223 |
Significance level:
***: p < 0.001.
**: p < 0.01.
*: p < 0.05.