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Revisiting preview search benefits at isoluminance : new onsets are not necessary for the preview advantage

Braithwaite, Jason and Humphreys, Glyn and Watson, Derrick G. and Hulleman, Johan (2005) Revisiting preview search benefits at isoluminance : new onsets are not necessary for the preview advantage. Perception and Psychophysics, 67 (7). pp. 1214-1228. ISSN 0031-5117

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Abstract

It has been argued that search performance underpreview conditions relies on automatic capture by luminance onsets (Donk & Theeuwes, 2001). We present three experiments in which preview search was examined with both isoluminant and nonisoluminant items (e.g., as defined by luminance onsets). Experiment 1 provided evidence against the automatic capture of attention by onsets. Search benefited when onset previews were followed by new onset stimuli, as compared with a full-set baseline matched for the number of new onsets but in which half the distractors appeared simultaneously at isoluminance. Furthermore, both Experiments 1 and 2 established a preview advantage when isoluminant targets followed onset previews, when compared with appropriate full-set baselines. Experiment 3 replicated this result, while showing that the preview benefit was disrupted by dual-task interference. The data indicate that new onsets are not necessary to generate a preview advantage in search. We discuss the data in terms of search’s benefiting from active inhibition of old onset-defined stimuli.

Item Type: Article
Journal or Publication Title: Perception and Psychophysics
Subjects:
Departments: Faculty of Science and Technology > Psychology
ID Code: 81742
Deposited By: ep_importer_pure
Deposited On: 23 Sep 2016 11:06
Refereed?: Yes
Published?: Published
Last Modified: 09 Sep 2017 00:05
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/81742

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