Figure 2.

A–C, Interactions of DAT1 3′UTR VNTR genotype as a function of task-irrelevant stimulus laterality (left, right) for each task component in each of the spatial competition (A), spatial cueing (B), and flanker (C) tasks. A, Set-size effect (RT, ms) during the spatial competition task was significantly reduced in the zero 10-repeat DAT1 group for left hemifield distractors. B, The reorienting cost (RT, ms) engendered by left cues was reduced in the zero 10-repeat repeat DAT1 group. C, There was no effect of DAT1 genotype on response selection as measured by flanker task incongruence cost (RT, ms). Error bars are ±1 SE.