Figure 1From: Impaired social decision making in patients with major depressive disorder Diagram illustrating the structure of a single round of the ultimatum game. Each round began with a 2Â s preparation interval. The participant then saw the number of the proposer (e.g., P01) or computer for 4Â s. Next, a pie indicating the offer proposed by the partner was displayed for a further 6Â s. The participant was given the choice to respond by pressing one button to accept and another to reject the offer with no time limit for this process. Then the result of the choice showed for 4Â s.Back to article page