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ERIC Number: EJ827086
Record Type: Journal
Publication Date: 2009-Feb
Pages: 16
Abstractor: As Provided
Reference Count: 53
ISSN: ISSN-0096-1523
Attentional Capture by Salient Color Singleton Distractors Is Modulated by Top-Down Dimensional Set
Muller, Hermann J.; Geyer, Thomas; Zehetleitner, Michael; Krummenacher, Joseph
Journal of Experimental Psychology: Human Perception and Performance, v35 n1 p1-16 Feb 2009
Three experiments examined whether salient color singleton distractors automatically interfere with the detection singleton form targets in visual search (e.g., J. Theeuwes, 1992), or whether the degree of interference is top-down modulable. In Experiments 1 and 2, observers started with a pure block of trials, which contained either never a distractor or always a distractor (0% or 100% distractors)--varying the opportunity to learn distractor suppression. In the subsequent trial blocks, the proportion of distractors was systematically varied (within-subjects factor in Experiment 1, between-subjects factor in Experiment 2)--varying the incentive to use distractor suppression. In Experiment 3, observers started with 100% distractors in the first block and were presented with "rare" color or luminance distractors, in addition to "frequent" color distractors, in the second block. The results revealed distractor interference to vary as a function of both the initial experience with distractors and the incentive to suppress them: the interference was larger without relevant practice and with a lesser incentive to apply suppression (Experiments 1-3). This set of findings suggests that distractor interference is top-down modulable. (Contains 11 footnotes and 6 figures.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Germany