Load theory of selective attention and cognitive control |
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Authors: | Lavie Nilli Hirst Aleksandra de Fockert Jan W Viding Essi |
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Affiliation: | Department of Psychology, University College London, London, United Kingdom. n.lavie@ucl.ac.uk |
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Abstract: | A load theory of attention in which distractor rejection depends on the level and type of load involved in current processing was tested. A series of experiments demonstrates that whereas high perceptual load reduces distractor interference, working memory load or dual-task coordination load increases distractor interference. These findings suggest 2 selective attention mechanisms: a perceptual selection mechanism serving to reduce distractor perception in situations of high perceptual load that exhaust perceptual capacity in processing relevant stimuli and a cognitive control mechanism that reduces interference from perceived distractors as long as cognitive control functions are available to maintain current priorities (low cognitive load). This theory resolves the long-standing early versus late selection debate and clarifies the role of cognitive control in selective attention. |
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