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Inter-trial and redundant-signals effects in visual search and discrimination tasks: separable pre-attentive and post-selective effects

Krummenacher, J. and Grubert, A. and Muller, Hermann J. (2010) Inter-trial and redundant-signals effects in visual search and discrimination tasks: separable pre-attentive and post-selective effects. Vision Research 50 (14), pp. 1382-1395. ISSN 0042-6989.

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Official URL: http://dx.doi.org/10.1016/j.visres.2010.04.006

Abstract

Feature singleton search is faster when the target-defining dimension is repeated, rather than changed, across trials (Found & Müller, 1996). A similar dimension repetition benefit has been observed in a non-search (discrimination) task with a single stimulus (Mortier, Theeuwes, & Starreveld, 2005). Two experiments examined whether these effects in the two tasks originate from the same or different processing stages. Experiment 1 revealed differential feature-specific effects, and Experiment 2 differential processing of dimensionally redundant target signals between the two types of task. These dissociations support the existence of separable, pre-attentive and post-selective sources of inter-trial effects in the two tasks.

Item Type: Article
Keyword(s) / Subject(s): Visual search, inter-trial effects, redundancy gain, pre-attentive processing, post-selective processing, race model inequality, Grice inequality
School or Research Centre: Birkbeck Schools and Research Centres > School of Science > Psychological Sciences
Depositing User: Administrator
Date Deposited: 31 Mar 2011 10:41
Last Modified: 17 Apr 2013 12:20
URI: http://eprints.bbk.ac.uk/id/eprint/3227

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