In each round, you will play a game in a group of three. There are two boxes: a red box referred to as RED, and a blue box referred to as BLUE. At the beginning of each round, a prize is randomly placed by the computer in one of the two boxes with equal probability. None of you knows where the prize is placed. The task of your group is to choose a box: if the prize is located in that box, each person of your group earns the prize; otherwise, you earn nothing. Each group member can vote for a box, and the group decision will be determined by majority rule. The detailed game rule will be explained below.
{{ if C.TREATMENT != 1}}The procedure of each round is as follows: (1) the prize is placed, (2) group members receive information, (3) group members send messages, (4) group members vote, (5) results are shown.
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The procedure of each round is as follows: (1) the prize is placed, (2) group members receive information, (3) group members vote, (4) results are shown.
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Each group member receives information about where the prize is placed. The information is not 100% reliable but is always more likely to be correct than incorrect. Members will receive information with different probabilities of correctness:
Your information is private, meaning that the other members do not know your information. Also, the group members do not necessarily receive the same information. For example, suppose you receive information that is correct with 60% probability, another member of your group also receives information that is correct with 60% probability and the last member receives information that is correct with 90% probability. In this case it is possible that you receive the information suggesting RED while the other two members receive the information suggesting BLUE.
It is randomly decided at the beginning of each round who gets which type of information.
You will receive your information and its reliability in the following form (note that this is just an example):
>> The information you receive :
"The prize is in RED."
which is correct with 60% probability.
Each member sends a message to the group. You will choose to send a message that says either ‘My information suggests RED’, ‘My information suggests BLUE’, or nothing (that is, you do not send any message).
After everyone has made this choice, all group members will learn all the messages.
{{ endif }} {{ if C.TREATMENT == 3}}Each member sends a message to the group. You will choose to send a message that says either ‘My information suggests RED’ or ‘My information suggests BLUE’.
After everyone has made this choice, all group members will learn all the messages.
{{ endif }}The group decision will be made by majority rule. That is, the box that receives more votes will be the group decision. If RED and BLUE receive the same number of votes, the group decision will be made by chance, with both possibilities being equally likely.
Your earnings are determined exclusively by the group decision and the location of the prize. If your group finds the prize, i.e., the voting outcome is RED (BLUE) and the prize is placed in RED (BLUE), each group member earns 120 points in this round. Otherwise, everyone earns no points.
After the voting stage, the round ends. You will be told the number of votes for each box, the group decision, and the box that contains the prize.
By double clicking HISTORY at the bottom of your pages you will get to see a table with all your results (your information,{{if C.TREATMENT != 1}} the messages,{{endif}} the votes, the group decision, the place of the prize) from the previous rounds.
In the beginning of every round, you will be randomly rematched with two new participants. Nobody will know which other participants are in their group in any round.