MobLab

Instructions

Aa

- In each round, each group member receives the same amount of money, and each simultaneously chooses how much of it to contribute to a water purification project.
- Use the slider to choose your amount and press
**Submit**.

- Your payoff depends both on your contribution and the contributions of the other members of your group.
- Each round, your payoff equals the amount you did not contribute
**plus**: - Each citizen benefits from the total amount contributed by the
**all**members of the group - each player's benefit equals the total group contributions times the
**Rate of Return**

- You start with $20; Rate of Return is 50%
- You contributed $12; total group contributions were $20
- You contributed $12; total group contributions were $30

Total Payoff |
= | Endowment | – | Your Contribution |
+ | Rate of Return |
× | Total Contributions |
---|---|---|---|---|---|---|---|---|

$18 | = | $20 | – | $12 | + | 50% | × | $20 |

Total Payoff |
= | Endowment | – | Your Contribution |
+ | Rate of Return |
× | Total Contributions |
---|---|---|---|---|---|---|---|---|

$23 | = | $20 | – | $12 | + | 50% | × | $30 |