Table 3. Results from multi-level linear regressions to explain investment levels of individuals for each round.
| Predictors | Predicted Investment | Predicted Investment (Group survived) | Predicted Investment (Group not survived) |
|---|---|---|---|
| Constant | -1.663 (1.276) | -0.306 (2.023) | -3.188 (1.592)* |
| System Health | 0.142 (0.031)*** | 0.035 (0.049) | 0.182 (0.036)*** |
| System Health ^ 2 | -0.0013 (0.0002)*** | -0.001 (0.0003)* | -0.002 (0.0003)*** |
| Round | 0.128 (0.039)*** | 0.115 (0.043)** | -0.034 (0.088) |
| Capacity | 0.128 (0.017)*** | 0.590 (0.052)*** | 0.077 (0.017)*** |
| Event costs | 0.069 (0.015)*** | 0.077 (0.017)*** | 0.046 (0.028) |
| Plays Screw card | 0.085 (0.027)** | 0.062 (0.53) | 0.100 (0.030)*** |
| Played Screw card last round | 0.041 (0.030) | 0.116 (0.054)** | 0.024 (0.035) |
| Others Played Screw cards last round | -0.003 (0.015) | -0.008 (0.029) | 0.006 (0.017) |
| Fraction chat messages | 1.012 (0.511)* | 1.554 (0.700)* | 0.755 (0.674) |
| Gender (Male = 1) | -0.361 (0.184)* | -0.423 (0.259) | -0.300 (0.240) |
| SVO | 0.017 (0.007)** | 0.015 (0.009) | 0.015 (0.009) |
| Risk Preference | -0.079 (0.049) | -0.105 (0.068) | -0.007 (0.065) |
| Patience | 0.004 (0.008) | 0.012 (0.010) | -0.0033 (0.010) |
| Future Thinking | 0.014 (0.007) | 0.001 (0.010) | 0.024 (0.010)* |
| Difficult Decisions | -2.238 (0.297)*** | -2.081 (0.414)*** | -1.870 (0.389)*** |
| N | 1083 | 547 | 536 |
| Number of groups | 33 | 11 | 22 |
| -Log Likelihood | 2566.804 | 1266.804 | 1241.706 |
| Variance components | |||
| Individual level | 0.581 (0.235) | 0.533 (0.309) | 0.453 (0.280) |
| Group level | 6.437 (0.283) | 5.796 (0.355) | 5.771 (0.365) |
| χ 2 | 24.46 (p<0.001) | 15.97 (p<0.001) | 6.71 (p<0.01) |
* p<0.05
** p< 0.01
*** p<0.001.