August 2014
Volume 14, Issue 10
Free
Vision Sciences Society Annual Meeting Abstract  |   August 2014
Is the attentional boost effect really a boost?
Author Affiliations
  • Khena Swallow
    Department of Psychology, Cornell University
  • Yuhong Jiang
    Department of Psychology, University of Minnesota
Journal of Vision August 2014, Vol.14, 534. doi:10.1167/14.10.534
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      Khena Swallow, Yuhong Jiang; Is the attentional boost effect really a boost?. Journal of Vision 2014;14(10):534. doi: 10.1167/14.10.534.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

When performing two tasks at once, increasing attention to one task typically impairs performance of the other. In contrast, the attentional boost effect suggests that dual-task facilitation can also sometimes occur: Memory for images that coincide with an unrelated stimulus that requires a response (target) is better than memory for images that coincide with a stimulus that requires no response (distractor). This performance advantage reflects a difference in memory for images presented with targets relative to those presented with distractors. As a result, it could reflect either an enhancement triggered by target detection or inhibitory processes triggered by distractor rejection. To determine whether the attentional boost effect is truly a boost, a baseline measure of image memory under dual-task encoding conditions is necessary. In several experiments participants memorized a series of continuously presented faces while monitoring a second series of unrelated squares. The face could appear in three different encoding conditions: on its own, with a square that required a response (target), or with a square that required no response (distractor). Processes associated with both target detection and distractor rejection were minimized when faces appeared on their own, making this condition suitable as a baseline measure of face encoding. Consistent with the claim that the attentional boost effect is triggered by target detection, the data showed that memory for faces coinciding with a target square was enhanced relative to faces in both the baseline and distractor conditions. There was no evidence of a difference in memory for faces in the baseline and distractor conditions. We conclude that detecting a behaviorally relevant event boosts memory for concurrently presented images in dual-task situations.

Meeting abstract presented at VSS 2014

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