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Rejecting salient distractors: Generalization from experience
Journal article   Open access   Peer reviewed

Rejecting salient distractors: Generalization from experience

Daniel B Vatterott, Michael C Mozer and Shaun P Vecera
Attention, perception & psychophysics, Vol.80(2), pp.485-499
02/2018
DOI: 10.3758/s13414-017-1465-8
PMID: 29230673
url
https://doi.org/10.3758/s13414-017-1465-8View
Published (Version of record) Open Access

Abstract

Distraction impairs performance of many important, everyday tasks. Attentional control limits distraction by preferentially selecting important items for limited-capacity cognitive operations. Research in attentional control has typically investigated the degree to which selection of items is stimulus-driven versus goal-driven. Recent work finds that when observers initially learn a task, the selection is based on stimulus-driven factors, but through experience, goal-driven factors have an increasing influence. The modulation of selection by goals has been studied within the paradigm of learned distractor rejection, in which experience over a sequence of trials enables individuals eventually to ignore a perceptually salient distractor. The experiments presented examine whether observers can generalize learned distractor rejection to novel distractors. Observers searched for a target and ignored a salient color-singleton distractor that appeared in half of the trials. In Experiment 1, observers who learned distractor rejection in a variable environment rejected a novel distractor more effectively than observers who learned distractor rejection in a less variable, homogeneous environment, demonstrating that variable, heterogeneous stimulus environments encourage generalizable learned distractor rejection. Experiments 2 and 3 investigated the time course of learned distractor rejection across the experiment and found that after experiencing four color-singleton distractors in different blocks, observers could effectively reject subsequent novel color-singleton distractors. These results suggest that the optimization of attentional control to the task environment can be interpreted as a form of learning, demonstrating experience's critical role in attentional control.
Young Adult Attention - physiology Generalization (Psychology) - physiology Humans Female Male Reaction Time - physiology Color Perception Psychomotor Performance - physiology

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