Appendix 1—figure 13. Comparisons of MCD and model-free postdiction accuracies.

The mean within-subject (across-trial) correlation between observed and postdicted data (y-axis) is plotted for each variable (x-axis, from left to right: choice confidence, spreading of alternatives, change of mind, certainty gain, RT, and subjective effort ratings), and each fitting procedure (gray: MCD full data fit, white: MCD 1-variable fit, and black: linear regression). Error bars depict standard error of the mean.