Table 1.
Treatment conditions.
Table 2.
Mean contributions.
Fig 1.
Average individual contributions.
Table 3.
Determinants of individual contributions, Random-effects Tobit models.
Fig 2.
Average contributions before period 16 for the Baseline and after period 15 for MP, NMP, MR and NMR.
Fig 3.
Average contributions in periods 16–30 according to the average number of points received in periods 1–15.
Table 4.
Determinants of contributions per treatment in periods 16–30: Random-effect Tobit model.
Fig 4.
Average contribution–Monetary rewards with varying lengths of incentivized and un-incentivized sequences.