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ERIC Number: EJ1008714
Record Type: Journal
Publication Date: 2013-Jun
Pages: 21
Abstractor: As Provided
Reference Count: 81
ISSN: ISSN-0096-1523
Two Mechanisms of Distractor Dilution: Visual Selection in a Continuous Flow
Yeh, Yei-Yu; Lin, Szu-Hung
Journal of Experimental Psychology: Human Perception and Performance, v39 n3 p872-892 Jun 2013
Distractor dilution, which reflects little distractor interference in a context of high display load but easy target processing, has sparked debate between theoretical viewpoints. These two viewpoints can be integrated into a model in which grouping and the efficacy of attention control influence the relative activation strength between the distractor and nontarget representations. In a context in which nontargets and a distractor were presented in separate task-irrelevant regions, the dilution effect was replicated when nontargets were grouped with the target, and the effect was reduced when the distractor was grouped with the target (Experiments 1 to 3). When nontargets were presented in a task-relevant region and the distractor was presented in a task-irrelevant region, the dilution effect was replicated when attention control was effective in accumulating nontarget information (Experiment 4b). The dilution effect was reduced when control was ineffective in a short stimulus duration of 50 ms (Experiment 4a), in a circular arrangement of stimuli (Experiment 5), or in a context in which the distractor location was random (Experiment 6). The dilution effect occurred either before (Experiment 1b) or after (Experiment 4b) the engagement of attention control on a continuum of visual selection through bottom-up and top-down process interactions. (Contains 4 tables and 9 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