Figure 1.

Example trials for Experiment 1, where the target was always the circle. In the fixed condition the displays were always a particular color throughout the experiment (green majority color, as here, or red majority color), although there could be a color singleton distractor present in the display. In the color-swapping condition displays could be either red or green, as could the color singleton distractors. Some trials in the color-swapping condition could have a completely different color mapping, as in the second and third displays, while some were the same, as in the fifth and sixth displays.