Experiment 2, spatial cueing control. In two variations of the dual presentation condition of Experiment 1, one of the two shape targets was replaced with a spatial cue, in either Cue/Target (left column) or Target/Cue (middle column) order. Row 1, Circle cue; row 2, large X cue; row 3, small x cue; row 4, average over cue types; red, mean and SEM of the single presentation condition; blue, mean and SEM of the dual presentation condition. The panel on the bottom right replicates the dual presentation (Target/Target) condition of Experiment 1.