Figure 4.
The Trust Game has two participants, an investor (Person A) and a trustee (Person B). Person A is given some money and told that they must send a proportion (from zero to the full amount) of this money to Person B, and that the experimenter will multiply the money by some amount. Once Person B receives the money, they are told that they must send back a portion of it to Player A, again ranging from zero to the full amount.