Simply shapely: relative, not absolute shapes are primed in pop-out search

Becker, Stefanie I. (2013) Simply shapely: relative, not absolute shapes are primed in pop-out search. Attention Perception and Psychophysics, 75 5: 845-861. doi:10.3758/s13414-013-0433-1

Author Becker, Stefanie I.
Title Simply shapely: relative, not absolute shapes are primed in pop-out search
Journal name Attention Perception and Psychophysics   Check publisher's open access policy
ISSN 1943-3921
Publication date 2013-07
Sub-type Article (original research)
DOI 10.3758/s13414-013-0433-1
Open Access Status
Volume 75
Issue 5
Start page 845
End page 861
Total pages 17
Place of publication New York, NY, United States
Publisher Springer
Collection year 2014
Language eng
Abstract Visual search is typically faster when the target from the previous trial is repeated than when it changes. This priming effect is commonly attributed to a selection bias for the target feature value or against the nontarget feature value that carries over to the next trial. By contrast, according to a relational account, what is primed in visual search is the target-nontarget relationship-namely, the feature that the target has in relation to the features in the nontarget context (e.g., larger, darker, redder)-and switch costs occur only when the target-nontarget relations reverse across trials. Here, the relational account was tested against current feature-based views in three eye movement experiments that used different shape search tasks (e.g., geometrical figures varying in the number of corners). For all tested shapes, reversing the target-nontarget relationships produced switch costs of the same magnitude as directly switching the target and nontarget features across trials ("full-switch"). In particular, changing only the nontargets produced large switch costs, even when the target feature was always repeated across trials. By contrast, no switch costs were observed when both the target and nontarget features changed, such that the coarse target-nontarget relations remained constant across trials. These results support the relational account over feature-based accounts of priming and indicate that a target's shape can be encoded relative to the shapes in the nontarget context.
Keyword Visual search
Eye movements
Priming of pop-out
Relational account
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Psychology Publications
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