In two independent studies, participants were more likely to obtain superior but delayed rewards when they had the opportunity to make a binding choice for the delayed option in advance, relative to when they simply had to wait for the delayed reward in the presence of a tempting inferior option. Notably, our experimental

setting provided a tightly controlled comparison of the effectiveness of different self-control strategies: different task conditions were economically equivalent in terms of rewards, delays, and trial durations. Nevertheless, participants were less likely Target Selective Inhibitor Library screening to receive large delayed rewards when they had to actively resist smaller-sooner rewards (Mischel et al., 1989), compared to when they could precommit to choosing the larger reward before being exposed to temptation (Ainslie, 1974). Consistent with previous research (McClure Idelalisib et al., 2004, McClure et al., 2007, Hare et al., 2009, Figner et al., 2010, Kober et al., 2010, Cohen et al., 2012, Essex et al., 2012 and Luo et al., 2012), we found that effortful inhibition of the impulse to choose a tempting but inferior reward was associated with strong activation in the DLPFC, IFG, and PPC during the waiting period. Precommitment was associated with activation in the LFPC. The LFPC was more

active during precommitment than during willpower and was more active when subjects had the opportunity to make binding (relative to nonbinding) choices for LL rewards. These activation Thiamine-diphosphate kinase patterns suggest that the LFPC is sensitive to the presence of opportunities to precommit and may play a role in deciding whether to precommit. The LFPC has been previously associated with metacognition, counterfactual thinking, and prospective valuation (Daw et al., 2006, De Martino et al., 2013, Gilbert et al., 2006, Burgess et al., 2007, Koechlin and Hyafil, 2007, Boorman et al., 2009, Boorman et al., 2011, Charron and Koechlin, 2010, Rushworth et al., 2011 and Tsujimoto et al., 2011). These cognitive processes are all expected to play a role in precommitment, which may involve recognizing, based on past experience, that future self-control failures are likely if temptations are present. Previous studies of the LFPC suggest that this region

specifically plays a role in comparing alternative courses of action with potentially different expected values (Daw et al., 2006, Boorman et al., 2009, Boorman et al., 2011 and Rushworth et al., 2011), a process that may rely on prospective (“look-ahead”) working memory capacity (Koechlin and Hyafil, 2007 and Charron and Koechlin, 2010). Our findings provide further support for this hypothesis in the context of self-controlled decision making. A functional connectivity analysis demonstrated that during precommitment decisions, the LFPC showed increased coupling with the DLPFC and PPC. These regions have consistently been implicated in willpower, both in the current study and many others (McClure et al., 2004, McClure et al., 2007, Hare et al., 2009, Figner et al.