Abstract
Two contrasting accounts for priming in visual search have been proposed. The main difference between the two is the level of perceptual processing at which the priming effects are assumed to occur, whether priming is assumed to operate through the selective facilitation of features or at the level of selection of objects for response. The aim of the experiments here was to contrast these accounts. In the first two experiments, observers performed a search for the odd diamond in the midst of two distractor diamonds. Each diamond had two colors, but the configurations of the colors within the diamonds were different for the two experiments in ways previously shown to lend themselves differently well to object formation. The results show that priming can be both feature- and object-based, depending on the topological properties of the stimuli. This was confirmed in a third experiment, in which a quite dissimilar stimulus set was used to address the same question, once again yielding similar results. We thus show that priming operates at various levels of perceptual processing, a result consistent with new findings from neuroimaging and neuropsychology.
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Á.K. was supported by the Human Frontiers Association and the Research Fund of the University of Iceland.
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Kristjánsson, Á., Ingvarsdöttir, Á. & Teitsdöttir, U.D. Object- and feature-based priming in visual search. Psychonomic Bulletin & Review 15, 378–384 (2008). https://doi.org/10.3758/PBR.15.2.378
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DOI: https://doi.org/10.3758/PBR.15.2.378