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Spatial Response Discrimination May Elicit a Simon Effect on a Non-Complementary Task.

Melanie Y Lam1, Romeo Chua2

  • 1Department of Human Kinetics, St Francis Xavier University, Antigonish, NS, Canada.

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|November 27, 2023
PubMed
Summary
This summary is machine-generated.

In a two-person Simon task, response discrimination with opposite task keys can elicit a Simon effect (SE). However, this effect is weaker than the joint Simon effect (JSE) observed with complementary tasks.

Keywords:
joint actionnon-complementary taskresponse-discrimination

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Area of Science:

  • Cognitive Psychology
  • Social Psychology
  • Human-Computer Interaction

Background:

  • The joint Simon effect (JSE) occurs when paired participants perform complementary halves of the Simon task.
  • Co-representation, where individuals represent their partner's task, is a proposed mechanism for the JSE.
  • The response-discrimination hypothesis suggests that distinguishing between response options can influence performance.

Purpose of the Study:

  • To investigate if response discrimination, by highlighting alternative task keys, can elicit a Simon effect (SE) in a two-person setting with non-complementary tasks.
  • To compare the SE in a non-complementary task setting with the established JSE in a complementary task setting.

Main Methods:

  • Participants performed a Go/No-Go Simon task while a co-actor initiated trials.
  • Three conditions were tested: same task keys (SK group), opposite task keys (OK group), and a standard joint Simon task (TS group).
  • The response-discrimination hypothesis guided the experimental design, focusing on spatial coding via task key assignments.

Main Results:

  • A weak but marginally significant Simon effect (SE) was observed in the OK group (opposite task keys).
  • No significant SE was found in the SK group (same task keys).
  • The standard joint Simon task (TS group) replicated the typical joint Simon effect (JSE).

Conclusions:

  • Response discrimination may contribute to a Simon effect in two-person settings with non-complementary tasks.
  • This effect is less pronounced than the JSE observed in complementary task settings.
  • The findings suggest that task complementarity plays a crucial role in fostering robust response representations leading to the JSE.