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Performance implications of alternat...

Hilscher, Matthew Bernd.

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Performance implications of alternative color-codes in airport X-ray baggage screening.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Performance implications of alternative color-codes in airport X-ray baggage screening./
作者:	Hilscher, Matthew Bernd.
面頁冊數:	112 p.
附註:	Source: Dissertation Abstracts International, Volume: 66-06, Section: B, page: 3449.
Contained By:	Dissertation Abstracts International66-06B.
標題:	Psychology, Experimental. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3178944
ISBN:	9780542186806

Performance implications of alternative color-codes in airport X-ray baggage screening.
Hilscher, Matthew Bernd.

Performance implications of alternative color-codes in airport X-ray baggage screening. - 112 p.

Source: Dissertation Abstracts International, Volume: 66-06, Section: B, page: 3449.

Thesis (Ph.D.)--University of Central Florida, 2005.

This research investigated both cognitive and affective influences of alternative color combinations in a search task paradigm. The effects of re-mapping the existing, comparatively arbitrarily color codes of baggage X-ray images, were explored. Alternative color-codes were evaluated for improving the economy of visual search in X-ray baggage screening. Using a 2 x 2 between-groups design, the perceptual aspects of color-codes varying in degree of visual agreeability (accordant or discordant) and color contrast (high or low) were examined in terms of effectiveness (detection accuracy) and efficiency (reaction time). Three hypotheses were put forth; two postulated main effects for color contrast and for visual agreeability, and a third postulated an interaction. Additionally, for comparison purposes, a fifth group of participants was presented with a stimulus condition that represented the current industry standard for colorizing X-ray images.

ISBN: 9780542186806Subjects--Topical Terms:

517106
Psychology, Experimental.

Performance implications of alternative color-codes in airport X-ray baggage screening.
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245 1 0 $a Performance implications of alternative color-codes in airport X-ray baggage screening.
300 $a 112 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-06, Section: B, page: 3449.
500 $a Major Professor: Florian Jentsch.
502 $a Thesis (Ph.D.)--University of Central Florida, 2005.
520 $a This research investigated both cognitive and affective influences of alternative color combinations in a search task paradigm. The effects of re-mapping the existing, comparatively arbitrarily color codes of baggage X-ray images, were explored. Alternative color-codes were evaluated for improving the economy of visual search in X-ray baggage screening. Using a 2 x 2 between-groups design, the perceptual aspects of color-codes varying in degree of visual agreeability (accordant or discordant) and color contrast (high or low) were examined in terms of effectiveness (detection accuracy) and efficiency (reaction time). Three hypotheses were put forth; two postulated main effects for color contrast and for visual agreeability, and a third postulated an interaction. Additionally, for comparison purposes, a fifth group of participants was presented with a stimulus condition that represented the current industry standard for colorizing X-ray images.
520 $a Out of 100 volunteers, data were usable for 95 participants who had been randomly assigned to one of five conditions. All participants were exposed to the same screening task. The screening task required participants to view 153 X-ray images in random order. Of these images, 36 contained a single threat item (knife, scissor, gun) among clutter. Analyses of variance revealed significant differences between conditions with respect to detection accuracy. Implications are that high-color contrast improves detection accuracy; specifically with respect to correct rejections, and that this effect on performance can be moderated by psycho-emotional mechanisms. Specifically, the impact of color-contrast was significantly more pronounced under conditions of accordant color combinations. Theoretical underpinnings and applications to other domains are discussed.
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