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Related Experiment Videos

Spontaneous decay of response-code activation

B Hommel1

  • 1Max-Planck-Institut für Psychologische Forschung, München, Germany.

Psychological Research
|January 1, 1994
PubMed
Summary
This summary is machine-generated.

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The Simon effect, a response bias to stimuli location, diminishes with less frequent noncorrespondence trials. Strategic preparation influences stimulus processing, but location-code decay appears automatic.

Area of Science:

  • Cognitive Psychology
  • Human Information Processing

Background:

  • The Simon effect demonstrates faster responses when stimulus location corresponds with response location.
  • The role of irrelevant spatial information in response selection remains an active area of research.

Purpose of the Study:

  • To investigate how the frequency of noncorrespondence trials affects the Simon effect.
  • To examine the interplay between stimulus discriminability, stimulus formation timing, and trial frequency on the Simon effect.

Main Methods:

  • Two experiments were conducted manipulating stimulus discriminability and stimulus formation timing.
  • The frequency of noncorrespondence trials was systematically varied across conditions.

Main Results:

Related Experiment Videos

  • The Simon effect decreased with lower stimulus discriminability and delayed stimulus formation, supporting gradual decay of location-based activation.
  • Increasing noncorrespondence trial frequency reduced and even reversed the Simon effect, indicating strategic preparation.
  • Trial frequency did not alter the interaction between stimulus properties and the Simon effect.

    • Conclusions:

    • Location-induced response-code activation decays gradually.
    • Strategic preparation influences stimulus processing and response selection based on irrelevant location information.
    • The automatic nature of location-code decay is distinct from strategic adjustments.