Fig. 4.

d′ as a function of set size for Experiment 1. Physical set size was changed in panel A, while an attentional cue was used to manipulate set size in panel B. In both cases, the detectability functions cross over each other, indicating that different decision rules are necessary to account for performance on the two stimuli. Display manipulation and search stimuli varied across blocks, while set size varied within blocks. Error bars represent within-subjects confidence intervals (Cousineau, 2005; Morey, 2008)