Figure 2.

(a) Gradually decreasing mean normalized ratings of subjective responsibility and of subjective regret under congruent and incongruent choices with 0, 2, 4, 6, and 8 other voters, otherwise considered objective responsibility. For clarity, subjective regret ratings here are shown only for negatively discrepant outcomes, i.e., where the outcome of the played gamble was worse than the outcome of the unplayed gamble, (b) The mean normalized subjective ratings of regret, displayed as a binary separation of low and high subjective responsibility, for negatively discrepant outcomes, (c) The mean regression coefficients for the three regression models used, each indicating that the predictive value of outcome discrepancy (Odiff) on subjective ratings of regret is greatly enhanced by multiplying this Odiff by one of the three measures of responsibility (number of voters, subjective rating of responsibility, or choice congruence). Error bars show the standard error of the mean across participants.