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Stimulus-response compatibility effects in go-no-go tasks: a dimensional overlap account.

L P Shiu1, S Kornblum

  • 1Department of Educational Psychology, Chinese University of Hong Kong, Shatin, Hong Kong. lshiu@cuhk.edu.hk

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Stimulus-response compatibility effects occur in go-no-go tasks, supporting the dimensional overlap (DO) model. Response times were faster when stimulus and response attributes matched, even when irrelevant to the decision.

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Area of Science:

  • Cognitive Psychology
  • Human Motor Control
  • Computational Neuroscience

Background:

  • The dimensional overlap (DO) model proposes that stimulus-response compatibility effects arise from automatic response activation.
  • These effects are predicted to manifest in go-no-go tasks, influencing response selection processes.

Purpose of the Study:

  • To empirically test the prediction of stimulus-response compatibility effects in go-no-go tasks based on the DO model.
  • To investigate how stimulus-response compatibility influences response times in a go-no-go paradigm.

Main Methods:

  • Two experiments were conducted using a go-no-go task where participants executed a hand movement in response to a go stimulus.
  • Stimulus-response compatibility was manipulated by varying the spatial attribute of the go stimuli relative to the required response.

Main Results:

  • Response times were significantly shorter when the spatial attribute of the go stimulus corresponded to the response attribute.
  • These compatibility effects were modulated by the similarity between go and no-go stimuli and the nature of the spatial attribute (location vs. meaning).

Conclusions:

  • The findings confirm the hypothesis that stimulus-response compatibility effects occur in go-no-go tasks, aligning with the DO model.
  • Results provide insights into the temporal dynamics of automatic and controlled response processes during decision-making.