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Inhibition and anticipation in visual search:evidence from preview search for colour defined static items

Braithwaite, Jason and Humphreys, Glyn (2003) Inhibition and anticipation in visual search:evidence from preview search for colour defined static items. Perception and Psychophysics, 65 (2). pp. 213-237. ISSN 0031-5117

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Abstract

We present four experiments in which we examined the effects of color mixing andprior target color knowledge on preview search (Watson & Humphreys, 1997). The task was to detect a target letter (an N or a Z) that appeared along with other new letters, when old distractors remained in the visual field. In some conditions, participants were told the target’s color; in others, they were not. Foreknowledge of the target’s color produced large improvements in search for both baseline and preview presentations (Experiment 1). For preview presentations, the magnitude of this effect was reduced if the target shared its color with a single colored set of previewed letters (Experiment 2). Removing this similarity across the displays greatly improved search efficiency (Experiment 3). In Experiment 4, we assessed and rejected the proposal that the effects reflected the probability that the target was carried by a particular color. We discuss the results in terms of separate effects of (1) inhibitory carryover from a preview color group and (2) an anticipatory set for a known target color.

Item Type: Article
Journal or Publication Title: Perception and Psychophysics
Subjects:
Departments: Faculty of Science and Technology > Psychology
ID Code: 81738
Deposited By: ep_importer_pure
Deposited On: 23 Sep 2016 11:52
Refereed?: Yes
Published?: Published
Last Modified: 18 Nov 2017 13:20
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/81738

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