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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Description/Abstract
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
| Item Type: | Article |
|---|---|
| ISSNs: | 0096-1523 (print) 1939-1277 (electronic) |
| Subjects: | B Philosophy. Psychology. Religion > BF Psychology |
| Divisions: | Faculty of Social and Human Sciences > Psychology > Cognition |
| Item ID: | 195965 |
| 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) |
| Date: | February 2012 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/195965 |
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