Tuning of offer value responses in the first and second half of each block. Transition types: (A–C) increase in maximum (A; n = 38), minimum (B; n = 64), or both (C; n = 76). D–F, Decrease in maximum (D; n = 33), minimum (E; n = 99), or both (F; n = 53). Shaded regions indicate SEM. The first half of each block is shown in lighter colors, the second half in darker colors. Tuning functions are consistent across the early and late halves of the block.