{{ block title }} Instructions {{ endblock }} {{ block content }}
In this study, you will be randomly assigned to a group of 4 participants. Each participant in the group can choose to harvest from a stock of resource A each round. The initial stock of A is 50 units, and each unit is worth {{ Constants.A_value }} points.
Each participant in the group decides how much he or she is going to harvest. The stock of A is linked to a second stock of resource, called B. For each harvested A-unit, a B-unit will also be detracted from the stock of B. Each B-unit is worth {{ Constants.B_value }} points.
At the end of each round, the sum of all harvested A- and B-units will be deducted from the two stocks and each participant will be paid. The individual payoff is so constructed: {{ Constants.A_value }} points per A-unit individually harvested plus {{ Constants.B_value }} points per B-units remaining in the stock.
Example: P1 harvests 10 units, while P2 harvests 5. B-stock goes down to 35 (50 – 10 - 5) units. Therefore, their respective payoffs are so calculated: P1 = 10*{{ Constants.A_value }} + 35*{{ Constants.B_value }} points. P2 = 5*{{ Constants.A_value }} + 35*{{ Constants.B_value }} points.
After every harvesting round, the two stocks grow again at a given recovery rate. If the stock goes below a threshold, the recovery rate falls. If the threshold is crossed, to move back to a high growth rate the stock has to reach a SPECIFIED LEVEL higher than the threshold. TABLE AND THRESHOLD PICTURE + HYSTERESIS check and probably say If the total group harvest exceeds the available A-stock at any time, the group loses and the game ends.
You have a limited amount of time to make a choice about how much to harvest. If time finishes and you have not made a choice, the computer will automatically count such choice as 0 (“zero”). All choices remain anonymous. However, you can communicate with the rest of your group in the chat.
The individual payoff for each round sums up and it is transformed into real currency. The experiment is followed by a brief questionnaire after which you will be paid no matter what happens to the resource stock.
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