@article{ref1,
title="The impact of Relative Prevalence on dual-target search for threat items from airport X-ray screening",
journal="Acta psychologica",
year="2010",
author="Godwin, Hayward J. and Menneer, Tamaryn and Cave, Kyle R. and Helman, Shaun and Way, Rachael L. and Donnelly, Nick",
volume="134",
number="1",
pages="79-84",
abstract="The probability of target presentation in visual search tasks influences target detection performance: this is known as the prevalence effect (Wolfe et al., 2005). Additionally, searching for several targets simultaneously reduces search performance: this is known as the dual-target cost (DTC: Menneer et al., 2007). The interaction between the DTC and prevalence effect was investigated in a single study by presenting one target in dual-target search at a higher level of prevalence than the other target (Target A: 45% Prevalence; Target B: 5% Prevalence). An overall DTC was found for both RTs and response accuracy. Furthermore, there was an effect of target prevalence in dual-target search, suggesting that, when one target is presented at a higher level of prevalence than the other, both the dual-target cost and the prevalence effect contribute to decrements in performance. The implications for airport X-ray screening are discussed.<p /> <p>Language: en</p>",
language="en",
issn="0001-6918",
doi="10.1016/j.actpsy.2009.12.009",
url="http://dx.doi.org/10.1016/j.actpsy.2009.12.009"
}