Attentional Capture Can Depend on Search Mode
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We have previously reported that an irrelevant singleton in one color does not capture attention when the target is defined by a singleton in a different color. Here, we show that when subjects are uncertain of the target color, capture occurs even when distractors and targets differ in color. The effects of target certainty on capture are explained in terms of the contingent involuntary orienting hypothesis of Folk, Remington, and Johnston (1992).