Table 1 Regression Analysis on the Influence of Reciprocal Roles and Group Identity on Prosocial Behavior
| Variables | Model 1 | Model 2 |
| β | SE | t | p | β | SE | t | p |
| Number of Comments | | | | | | | | |
| Constant | | 0.09 | ?1.61 | 0.109 | | 0.11 | ?0.89 | 0.375 |
| Reciprocal Role | 0.11 | 0.11 | 1.98 | 0.048 | 0.01 | 0.14 | 0.14 | 0.891 |
| Group Identity | | ?0.05 | 0.18 | ?0.63 | 0.531 |
| Reciprocal Role × Group Identity | | 0.29 | 0.24 | 3.33 | 0.001 |
| F | 3.93* | 8.12*** |
| Adjusted R2 | 0.01 | 0.06 |
| Number of Likes | | | | | | | | |
| Constant | | 0.09 | ?1.7 | 0.09 | | 0.12 | ?1.23 | 0.22 |
| Reciprocal Role | 0.11 | 0.11 | 2.1 | 0.037 | 0.04 | 0.14 | 0.61 | 0.545 |
| Group Identity | | ?0.02 | 0.18 | ?0.19 | 0.851 |
| Reciprocal Role × Group Identity | | 0.23 | 0.24 | 2.62 | 0.009 |
| F | 4.4* | 6.54*** |
| Adjusted R2 | 0.01 | 0.05 |