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Individual’s log-discounting rates were plotted against their own score on the Utility Measure of Cigarette Reinforcing Efficacy (UMCE). The figures suggest that discounting changes systematically with the midpoint of utility. Statistical analyses on the whole group confirmed that discounting for $10 worth of hypothetical money, $1000 worth of hypothetical money, and $1000 worth of hypothetical cigarettes are significantly correlated, positively so, with utility.
