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Dual-target search for high and low prevalence x-ray threat targets

Dual-target search for high and low prevalence x-ray threat targets
Dual-target search for high and low prevalence x-ray threat targets
Recent studies have shown that the prevalence of target presentation in visual search has an impact on target detection rates, and also that searching for two targets leads to a decrement in performance (the “dual-target cost”). In the present experiments, we added to previous work that has examined the interaction between the prevalence effect and dual-target cost, and also to previous work that has examined a full range of prevalence levels. We found no interaction between the dual-target cost and prevalence effect, though the response criterion in dual-target search did interact with target prevalence in an unexpected manner. Furthermore, we detected anasymmetry in the prevalence effect: It was more marked for high than low prevalence. Implications for real-world tasks are discussed.
1350-6285
1439-1463
Godwin, H.J.
df22dc0c-01d1-440a-a369-a763801851e5
Menneer, T.
d684eaf6-1494-4004-9973-cb8ccc628efa
Donnelly, N.
05c83b6b-ee8d-4c9d-85dc-c5dcd6b5427b
Cave, K.R.
6b785a60-6331-429a-9b98-d0b10264db5b
Godwin, H.J.
df22dc0c-01d1-440a-a369-a763801851e5
Menneer, T.
d684eaf6-1494-4004-9973-cb8ccc628efa
Donnelly, N.
05c83b6b-ee8d-4c9d-85dc-c5dcd6b5427b
Cave, K.R.
6b785a60-6331-429a-9b98-d0b10264db5b

Godwin, H.J., Menneer, T., Donnelly, N. and Cave, K.R. (2010) Dual-target search for high and low prevalence x-ray threat targets. Visual Cognition, 18 (10), 1439-1463. (doi:10.1080/13506285.2010.500605).

Record type: Article

Abstract

Recent studies have shown that the prevalence of target presentation in visual search has an impact on target detection rates, and also that searching for two targets leads to a decrement in performance (the “dual-target cost”). In the present experiments, we added to previous work that has examined the interaction between the prevalence effect and dual-target cost, and also to previous work that has examined a full range of prevalence levels. We found no interaction between the dual-target cost and prevalence effect, though the response criterion in dual-target search did interact with target prevalence in an unexpected manner. Furthermore, we detected anasymmetry in the prevalence effect: It was more marked for high than low prevalence. Implications for real-world tasks are discussed.

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Published date: 2010

Identifiers

Local EPrints ID: 152013
URI: http://eprints.soton.ac.uk/id/eprint/152013
ISSN: 1350-6285
PURE UUID: 38888b1b-4e05-48f8-b326-6af2d296246d
ORCID for H.J. Godwin: ORCID iD orcid.org/0009-0005-1232-500X

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Date deposited: 13 May 2010 08:12
Last modified: 14 Mar 2024 02:55

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Contributors

Author: H.J. Godwin ORCID iD
Author: T. Menneer
Author: N. Donnelly
Author: K.R. Cave

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