Using the dual-target cost to explore the nature of search target representations
Stroud, Michael J., Menneer, Tamaryn, Cave, Kyle R. and Donnelly, Nick (2012) Using the dual-target cost to explore the nature of search target representations. Journal of Experimental Psychology: Human Perception and Performance, 38, (1), 113-122. (doi:10.1037/a0025887 ). (PMID:22004194).
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Eye movements were monitored to examine search efficiency and infer how color is mentally represented to guide search for multiple targets. Observers located a single color target very efficiently by fixating colors similar to the target. However, simultaneous search for 2 colors produced a dual-target cost. In addition, as the similarity between the 2 target colors decreased, search efficiency suffered, resulting in more fixations on colors dissimilar to both target colors, which we describe as a "split-target cost." The patterns of fixations provide evidence to the type of mental representations guiding search. When the 2 targets are dissimilar, they are apparently encoded as separate and discrete representations. The fixation patterns for more similar targets can be explained with either 2 discrete target representations or a single, unitary range containing the target colors as well as the colors between them in color space
|Subjects:||B Philosophy. Psychology. Religion > BF Psychology|
|Divisions:||Faculty of Social and Human Sciences > Psychology > Cognition
|Date Deposited:||31 Aug 2011 12:50|
|Last Modified:||22 May 2013 01:02|
|Contributors:||Stroud, Michael J. (Author)
Menneer, Tamaryn (Author)
Cave, Kyle R. (Author)
Donnelly, Nick (Author)
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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