Fig. 3
From: A review on exploration–exploitation trade-off in psychiatric disorders
In the experimental"four-armed bandit task,"participants repeatedly select one of four slot machines. Each slot machine awards points that can be converted into cash, and the average payouts of the machines vary at random and independently from one trial to the next. To learn about their current value and make choices based on their perceptions of which slot machine offers the best payouts, participants must actively sample the machines. The goal of the task is to investigate exploratory and exploitative decision-making under ambiguous circumstances [27]