Figure 6.

Precommitment depends on task parameters. (A) Precommitment was greater when the reward ratio R_L/R_S was larger. On the x axis, D_S and R_S were simultaneously manipulated so that the SS vs. LL preference was held constant. Despite the constant SS vs. LL preference, the preference for precommitment increased as the size of the small reward decreased. (B) Precommitment increases with the delay (D_C) between commitment and choice. At the selected parameters, LL was preferred 0.196 as much as SS. When there was no delay between commitment and choice, C was preferred over N by the same ratio. As D_C increased, the relative preference for N increased, despite no change in the relative preference for SS vs. LL. This figure was generated with mathematical hyperbolic discounting.