GARP Experiment


Instructions


Your answers are completely anonymous .

In this experiment you are asked to make a series of choices about how to divide a set of tokens between yourself and one other subject on the net. You and the other subject will be paired randomly and you will not be told each other's identity.

As you divide the tokens, you and the other subject will each earn points.

Each choice you make is similar to the following:

Divide 50 tokens: Hold @ 1 point each, and Pass @ 2 points each.

In this choice you must divide 50 tokens. You can keep all the tokens, keep some and pass some, or pass all the tokens. In this example, you will receive 1 point for every token you hold, and the other player will receive 2 points for every token you pass. For example, if you hold 50 and pass 0 tokens, you will receive 50 points, and the other player will receive no points. If you hold 0 tokens and pass 50, you will receive 0 points and the other player will receive 50 x 2 or 100 points. However, you could choose any number between 0 and 50 to hold. For instance, you could choose to hold 29 tokens and pass 21. In this case you would earn 29 points, and the other subject would receive 21 x 2 or 42 points.

Here is another example:

Divide 40 tokens: Hold @ 3 points each, and Pass @ 1 point each.

In this example every token you hold earns you 3 points, and every token you pass earns the other subject 1 point.


Important Note : In all cases you can choose any number to hold and any number to pass, but the number of tokens you hold plus the number of tokens you pass must equal the total number of tokens to divide.


You will be asked to make 8 allocation decisions like the examples we just discussed. After all the decision forms have been collected, we will shuffle them and randomly pair your form with that of another subject in this experiment. We will then randomly select one of your decisions to carry out. You will then get the points you allocated in the `hold' portion of your decision, and the other subject will get the points you allocated on the `pass' portion of your decision. You will then be paired again with a different subject in the experiment. This time we will randomly choose one of the other subject's eight decisions to carry out. The other subject will get the points in the `hold' portion of the decision, and you will get the points in the `pass' portion. Your ``earnings'' will equal the total points from these two pairings.

In the following section are the 8 choices we would like you to make. Please fill out the form, taking the time you need to be accurate, and then submit your decisions.

Thank you very much. Good luck!


Decision Sheet

Directions: Please fill in all the blanks below. Make sure the number of tokens listed under Hold plus the number listed under Pass equals the total number of tokens available.

Divide 60 tokens: Hold @ 1 point each, and Pass @ 1 point each.

Divide 75 tokens: Hold @ 1 point each, and Pass @ 2 points each.

Divide 40 tokens: Hold @ 3 points each, and Pass @ 1 point each.

Divide 60 tokens: Hold @ 1 point each, and Pass @ 2 points each.

Divide 75 tokens: Hold @ 2 points each, and Pass @ 1 point each.

Divide 40 tokens: Hold @ 1 point each, and Pass @ 3 points each.

Divide 60 tokens: Hold @ 2 points each, and Pass @ 1 point each.

Divide 100 tokens: Hold @ 1 point each, and Pass @ 1 point each.


Please answer the following background information questions

Age: Sex:

Major:

Current occupation:

under graduate student graduate student faculty other

Any comments?


John H. Miller , miller@zia.hss.cmu .edu.