Figure 3.

Measures that include verification processes suggest that the target was not completed in the search display, as indicated by poor performance in U-O. Overall reaction times, from search display onset to subject response, were longest in the U-O condition in Experiment 1 (A) and longer in U-O relative to U-U in Experiment 2 (B). Verification time, from the first fixation on the target until the subject's manual response, was similarly longest in U-O, both for Experiment 1 (C) and for Experiment 2 (D). Error bars indicate one standard error of the mean. See Figure 4A and 4B for the time-to-target component of reaction time.