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The perceptual and cognitive distractor-previewing effect.

Atsunori Ariga1, Jun-ichiro Kawahara

  • 1Department of Psychology, Hiroshima University, Hiroshima, Japan. ariga@L.u-tokyo.ac.jp <ariga@L.u-tokyo.ac.jp>

Journal of Vision
|December 15, 2004
PubMed
Summary

Previewing distractors speeds up visual search by increasing target saliency. This distractor-previewing effect (DPE) works across various stimuli, including words, suggesting a high-level cognitive process.

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Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Human Information Processing

Background:

  • The distractor-previewing effect (DPE) describes reduced reaction times to targets when distractors are previewed.
  • Previous research suggested DPE arises from global adaptation to previewed distractors, enhancing target saliency.

Purpose of the Study:

  • To test and extend the global adaptation hypothesis of the DPE.
  • To investigate the DPE across diverse stimulus types (color, face, motion, word).
  • To explore the locus of the DPE, particularly with high-level stimuli like words.

Main Methods:

  • Visual search experiments were conducted.
  • Stimuli included color, face, motion, and word categories.
  • The effect of previewing distractor items on target search time was measured.

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Main Results:

  • The distractor-previewing effect was observed across all tested stimulus types.
  • The DPE was successfully elicited by prior activation of distractors using word labels.
  • This indicates the effect is not limited to low-level visual features.

Conclusions:

  • The distractor-previewing effect is a robust phenomenon applicable to various visual stimuli.
  • The findings support a high-level cognitive locus for the DPE, potentially involving semantic or conceptual processing.
  • Global adaptation to distractors, even via abstract representations like word labels, can enhance visual search efficiency.