Figure 1:

Time course of one trial in the intertemporal choice task (Ripke et al., 2012). Participants have to choose between a delayed amount of money and a fixed immediate amount (here: 20.00 €). Delays ranged from 10 to 180 days and delayed amounts were adapted to each individuals discounting rate (for further details, see Ripke et al., 2012). After the presentation of the delayed reward for 2 seconds, participants have 6 seconds to decide. Then, an exclamation mark indicates which button (left or right) they have to press to select the delayed reward. Each trial was followed by an inter-trial interval (M=7 seconds, range [6-8]). For fMRI analyses, the decision-related signal is based on the onset of offer presentation. The value-related signal refers to a parametric modulator representing the subjective value of an offer based on the individual discounting rate.