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Location specificity in response selection processes for visual stimuli.

Hagit Magen1, Asher Cohen

  • 1Department of Psychology, The Hebrew University, Jerusalem, Israel. msmagen@mscc.huji.ac.il

Psychonomic Bulletin & Review
|October 21, 2005
PubMed
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The spatial Simon effect shows unique underadditivity with stimulus onset asynchrony (SOA), unlike the color Simon effect. This suggests space plays a distinct role in response selection processes.

Area of Science:

  • Cognitive Psychology
  • Neuroscience

Background:

  • The psychological refractory period (PRP) paradigm involves responding to two successive tasks (T1 and T2).
  • Simon effects, both spatial and color-based, are linked to response selection processes.
  • Previous research indicated an underadditive relationship between the spatial Simon effect and stimulus onset asynchrony (SOA) in T2.

Purpose of the Study:

  • To investigate the relationship between spatial and color Simon effects and SOA.
  • To determine if the spatial nature of an effect influences its interaction with SOA.
  • To explore the unique role of space in response selection.

Main Methods:

  • Utilized the psychological refractory period (PRP) paradigm.
  • Induced spatial and color Simon effects in the second task (T2).

Related Experiment Videos

  • Manipulated stimulus onset asynchrony (SOA) between targets for T1 and T2.

    • Main Results:

    • Experiment 1 replicated the underadditive relationship between the spatial Simon effect and SOA.
    • Experiment 2 demonstrated an additive relationship between the color Simon effect and SOA.
    • The spatial Simon effect exhibited underadditivity, while the color Simon effect showed additivity with SOA.

    Conclusions:

    • The underadditivity of the spatial Simon effect is likely due to its spatial characteristics.
    • Space may play a unique and distinct role in cognitive response selection processes.
    • Color and spatial information appear to interact differently with response selection under PRP conditions.