Table 7.
Cooperation dynamics (no punishment)
| Contribution to the public good (no punishment) | ||||
|---|---|---|---|---|
| Tobit estimation | Multilevel mixed effects estimation | |||
| Period | −0.485*** | −0.492*** | −0.500*** | −0.499*** |
| (0.085) | (0.090) | (0.052) | (0.054) | |
| Final period | −1.600** | −1.741** | −0.812** | −0.864** |
| (0.757) | (0.781) | (0.394) | (0.407) | |
| Mean peer contribution in t−1 | 1.027*** | 1.000*** | 0.461*** | 0.460*** |
| (0.054) | (0.058) | (0.027) | (0.027) | |
| MTurk | 0.759 | 1.827 | 2.252*** | 2.980*** |
| (0.778) | (1.142) | (0.862) | (0.985) | |
| Age | 0.033 | 0.036 | ||
| (0.039) | (0.031) | |||
| Female | 2.022*** | 1.230** | ||
| (0.674) | (0.557) | |||
| Single child | 0.128 | 0.128 | ||
| (1.017) | (0.789) | |||
| Foreign | −0.321 | 0.191 | ||
| (1.903) | (1.315) | |||
| Membership | 2.153** | 1.692** | ||
| (0.975) | (0.690) | |||
| Constant | −0.696 | −3.582** | 7.073*** | 4.412*** |
| (0.931) | (1.599) | (0.870) | (1.296) | |
| N | 2880 | 2745 | 2880 | 2745 |
| Chi2/F | 177.16 | 80.17 | 822.66 | 799.84 |
Left-censored Tobit and multilevel mixed effects estimation, which allows for individual and group differences, as well as for treatment-specific residuals. ‘Period’ is period number; ‘Final period’ is a dummy for the last period; ‘Mean peer contribution in t−1′ is the average contribution of the other members in the group in t−1; ‘MTurk’ is a dummy for the MTurk sample; demographic controls are the same of Table 6. Robust standard errors clustered on groups; Robust standard errors clustered on groups for the Tobit model
* p < 0.1; ** p < 0.05; *** p < 0.01