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The accessory Simon effect within and across visual dimensions.

Hagit Magen1

  • 1The Hebrew University, Jerusalem, Israel.

Quarterly Journal of Experimental Psychology (2006)
|May 29, 2018
PubMed
Summary
This summary is machine-generated.

This study shows spatial Simon effects occur within visual modules, differing based on whether spatial and feature information are processed together or separately. Interference patterns vary depending on this modular processing.

Keywords:
Dimension-Action modelSimon effectresponse interferenceresponse selectionvisual dimensions

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • The Dimension-Action model proposes modular response selection in the visual system based on target features.
  • This study extends the model, suggesting spatial location processing also occurs within modules, alongside feature information.
  • The typical Simon effect, arising from feature-location interference, is thus hypothesized to occur within these modules.

Purpose of the Study:

  • To investigate if the reduction of the spatial Simon effect with increased reaction time is specific to intra-dimension (feature and location processed together) effects.
  • To differentiate this pattern from cross-dimension (feature and location processed separately) Simon effects using the accessory Simon task.
  • To explore the influence of symbolic spatial cues on these effects.

Main Methods:

  • Utilized the accessory Simon task to examine spatial Simon effects.
  • Conducted two experiments manipulating the relationship between target features and spatial locations (intra-dimension vs. cross-dimension).
  • Varied the task relevance of distractors and used symbolic spatial cues (arrows) in different conditions.

Main Results:

  • Intra-dimension Simon effects decreased as reaction time increased, modulated by distractor relevance.
  • Cross-dimension accessory Simon effects were positive and increased with reaction time.
  • Intra-dimension Simon effects did not show reduction when spatial information was presented symbolically via arrows.

Conclusions:

  • Interference in the accessory Simon task is influenced by the type of irrelevant spatial information.
  • The modular locus of target and distractor processing significantly impacts Simon effect characteristics.
  • Findings support a modular view of visual response selection, encompassing both feature and spatial information processing.