Group-level mean and individual indifference points.

Mean and individual indifference points of participants who passed at least three of four attention checks during the discounting task. Panel A depicts mean indifference points as a function of delay by group assignment, plotted on an ordinal scale. Panels B, C, and D depict mean indifference points within each group (bold lines); transparent lines depict individual subject discounting curves. Error bars represent standard error.