As found in studies of aircraft structural inspection, the time used for judging if a part of an aircraft shows tiny cracks is composed of search time, used for actively scanning, and non-search time, used for matching and decision while fixating a region of interest (Drury et al. 1997).
These findings can be applied to detection of threats by X-ray screening of passenger bags at airports. To investigate whether search time and non-search time change when an experienced screener is given additional training in recognising threat objects in passenger bags, data from a European
airport were analysed. A comparison of detection performance and reaction time between two large groups of screeners, one trained for 6 months, shows a large impact of training on overall performance and on both search and non-search components of the task. There was also a small but consistent
decline in performance measures with screener age. This study shows a way to localise the effect of training on threat detection performance for aviation security screening. Analysis of the time needed for screening each passenger bag showed that training had a significant effect, particularly
on the non-search part of the searching process (i.e. identification, recognition, decision, response execution, etc.).
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X-ray baggage screening;
Document Type: Research Article
Department of Psychology, University of Zurich, Zurich, Switzerland,School of Applied Psychology, University of Applied Sciences Northwestern Switzerland (FHNW), Olten, Switzerland
Department of Industrial and Systems Engineering, University at Buffalo: SUNY, Buffalo, NY, USA
School of Applied Psychology, University of Applied Sciences Northwestern Switzerland (FHNW), Olten, Switzerland,Department of Psychology, University of Zurich, Zurich, Switzerland
June 1, 2009
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