In this study, we investigated X-ray screener performance on improvised explosive device (IED) detection within a perceptual discrimination training paradigm. We looked at the effects of a particular IED discrimination training intervention (holistic IED versus IED components) on detection when tested using realistic stimuli that varied the level of clutter overlap and overall difficulty in terms of clutter quantity. Results suggest that holistic training has benefits for performance during testing when threats are partially occluded. The results are discussed in the context of additional research directions and training design issues.
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