Top-down influences on attentional capture by color changes |
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Authors: | Adrian von Mühlenen Markus Conci |
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Institution: | (1) Department of Psychology, University of Warwick, Coventry, CV4 7AL, UK;(2) Department Psychologie, Ludwig-Maximilians-University Munich, 80802 Munich, Germany |
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Abstract: | Previous studies have shown that a change in an existing object is not as effective in capturing attention as the appearance
of a new object. This view was recently challenged by Lu and Zhou (Psychonomic Bulletin and Review 12:567–572, 2005), who
found strong capture effects for an object changing its color. We suspected that this finding critically depends on a procedural
particularity in Lu and Zhou’s study, namely that the color of the unique item and the color of the no-unique items randomly
switched between trials. In the current study we replicate Lu and Zhou’s capture effect (Experiment 1) and show that no capture
occurs when the color-to-stimuli assignment is fixed (Experiment 2). Two further experiments suggest that the capture effect
in Experiment 1 is not because the unique item switched color (Experiment 3), but because all the no-unique items switched
color (Experiment 4). The results are discussed considering top-down modulation and inter-trial priming effects.
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