Fig. 2.

Effective propranolol dose vs change in discount rate (discount rate in placebo condition minus propranolol condition) (A) and change in reference-dependence (Delay Vary minus Immediate Vary discount rate, on placebo minus on propranolol) (B). Effective dose = 80 mg divided by the participant’s BMI. There was no significant correlation between change in discount rate overall and effective propranolol dose (N = 26; r = −0.14; P = 0.507). As effective dose increased, the difference between Delay Vary and Immediate Vary discount rates decreased on propranolol relative to placebo (N = 26; r = 0.49; P = 0.012).