Experimental Design
There are multiple rounds in the game you are about to play. The system may randomly stop the game at any time. At the beginning of the experiment, 38 participants are randomly divided into two groups: Group A and Group B.
In each round, one group plays the game while the other group observes but does not participate. At the beginning of each round, every member of the group playing the game receives 100 Experimental Currency Units (ECU), which they can choose to either save or invest. The exchange rate is 20 ECU = 1 RMB.
Additionally, participants who choose to invest and become “successful” will receive an extra 400 ECU. The probability of becoming successful increases with the amount invested. Specifically, if a participant invests e, their probability of success is:
0.05√e
If a participant becomes successful, they receive a reward of 400 ECU. If they are not successful, they receive nothing for that investment.
Moreover — and perhaps more importantly — participants also receive a reward based on the number of successful players in the next round.
Each round of the game consists of five stages, which occur in sequence.