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Menneer, Tamaryn; Stroud, Michael J.; Cave, Kyle R.; Li, Xingshan; Godwin, Hayward J.; Liversedge, Simon P.; Donnelly, Nick – Journal of Experimental Psychology: Applied, 2012
Searching simultaneously for metal threats (guns and knives) and improvised explosive devices (IEDs) in X-ray images is less effective than 2 independent single-target searches, 1 for metal threats and 1 for IEDs. The goals of this study were to (a) replicate this dual-target cost for categorical targets and to determine whether the cost remains…
Descriptors: National Security, Visual Perception, Eye Movements, Reaction Time
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Yamani, Yusuke; McCarley, Jason S. – Journal of Experimental Psychology: Applied, 2010
Color and intensity coding provide perceptual cues to segregate categories of objects within a visual display, allowing operators to search more efficiently for needed information. Even within a perceptually distinct subset of display elements, however, it may often be useful to prioritize items representing urgent or task-critical information.…
Descriptors: Visual Stimuli, Cues, Experimental Psychology, Experiments
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Menneer, Tamaryn; Donnelly, Nick; Godwin, Hayward J.; Cave, Kyle R. – Journal of Experimental Psychology: Applied, 2010
Previous studies have demonstrated a dual-target cost in visual search. In the current study, the relationship between search for one and search for two targets was investigated to examine the effects of target prevalence and practice. Color-shape conjunction stimuli were used with response time, accuracy and signal detection measures. Performance…
Descriptors: Reaction Time, Security Personnel, Stimuli, Incidence
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Francis, Gregory; Bias, Keri; Shive, Joshua – Journal of Experimental Psychology: Applied, 2010
Mathematicians have proven that four colors are sufficient to color 2-D maps so that no neighboring regions share the same color. Here we consider the psychological 4-color problem: Identifying which 4 colors should be used to make a map easy to use. We build a model of visual search for this design task and demonstrate how to apply it to the task…
Descriptors: Maps, Search Strategies, Counties, Psychology