Understanding the contribution of target repetition and target expectation to the emergence of the prevalence effect in visual search
Understanding the contribution of target repetition and target expectation to the emergence of the prevalence effect in visual search
Behavior in visual search tasks is influenced by the proportion of trials on which a target is presented (the target prevalence). Previous research has found that when target prevalence is low (2% prevalence), participants tend to miss targets, compared with higher prevalence levels (e.g., 50% prevalence). There is an ongoing debate regarding the relative contribution of target repetition and the expectation that a target will occur in the emergence of prevalence effects. In order to disentangle these two factors, we went beyond previous studies by directly manipulating participants’ expectations regarding how likely a target was to appear on a given trial. This we achieved without using cues or feedback. Our results indicated both target repetition and target expectation contribute to the emergence of the prevalence effect.
809-816
Godwin, H.J.
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Menneer, T.
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Riggs, C.A.
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Taunton, D.
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Cave, K.R.
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Donnelly, N.
05c83b6b-ee8d-4c9d-85dc-c5dcd6b5427b
June 2016
Godwin, H.J.
df22dc0c-01d1-440a-a369-a763801851e5
Menneer, T.
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Riggs, C.A.
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Taunton, D.
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Cave, K.R.
6b785a60-6331-429a-9b98-d0b10264db5b
Donnelly, N.
05c83b6b-ee8d-4c9d-85dc-c5dcd6b5427b
Godwin, H.J., Menneer, T., Riggs, C.A., Taunton, D., Cave, K.R. and Donnelly, N.
(2016)
Understanding the contribution of target repetition and target expectation to the emergence of the prevalence effect in visual search.
Psychonomic Bulletin & Review, 23 (3), .
(doi:10.3758/s13423-015-0970-9).
(PMID:26597890)
Abstract
Behavior in visual search tasks is influenced by the proportion of trials on which a target is presented (the target prevalence). Previous research has found that when target prevalence is low (2% prevalence), participants tend to miss targets, compared with higher prevalence levels (e.g., 50% prevalence). There is an ongoing debate regarding the relative contribution of target repetition and the expectation that a target will occur in the emergence of prevalence effects. In order to disentangle these two factors, we went beyond previous studies by directly manipulating participants’ expectations regarding how likely a target was to appear on a given trial. This we achieved without using cues or feedback. Our results indicated both target repetition and target expectation contribute to the emergence of the prevalence effect.
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Accepted/In Press date: 26 October 2015
e-pub ahead of print date: 23 November 2015
Published date: June 2016
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Local EPrints ID: 388783
URI: http://eprints.soton.ac.uk/id/eprint/388783
PURE UUID: 10b3b307-976f-4a15-8a76-00f688259b34
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Date deposited: 03 Mar 2016 10:19
Last modified: 15 Mar 2024 03:34
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Author:
T. Menneer
Author:
C.A. Riggs
Author:
K.R. Cave
Author:
N. Donnelly
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