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Related Experiment Videos

Stimulus and response representations underlying orthogonal stimulus-response compatibility effects.

Yang Seok Cho1, Robert W Proctor

  • 1Department of Psychological Sciences, Purdue University, West Lafayette, Indiana 47904-1364, USA. yscho@psych.purdue.edu

Psychonomic Bulletin & Review
|May 16, 2003
PubMed
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Stimulus-response compatibility (SRC) effects reveal how we select responses when stimuli and responses differ. Orthogonal SRC effects show advantages for specific mappings, influenced by coding systems rather than just motor constraints.

Area of Science:

  • Cognitive Psychology
  • Human-Computer Interaction
  • Neuroscience

Background:

  • Stimulus-response compatibility (SRC) effects are crucial for understanding response selection.
  • Orthogonal dimensions in stimulus and response sets lead to specific SRC effects.
  • Two types of orthogonal SRC effects are observed in two-choice tasks.

Purpose of the Study:

  • To review and analyze evidence for two types of orthogonal SRC effects.
  • To evaluate proposed mechanisms, including asymmetric coding, motoric accounts, and end-state comfort.
  • To determine the underlying representational properties of spatial and verbal codes.

Main Methods:

  • Review of existing literature on orthogonal stimulus-response compatibility effects.
  • Analysis of evidence supporting asymmetric coding versus motoric accounts.

Related Experiment Videos

  • Evaluation of experimental findings, including mental rotation tasks.

    • Main Results:

    • An overall up-right/down-left mapping advantage is linked to asymmetric verbal and spatial codes.
    • Mapping preferences related to response apparatus position and hand align more with asymmetric coding than motoric accounts.
    • Evidence suggests spatial information uses asymmetric categorical and coordinate codes.

    Conclusions:

    • Asymmetric coding provides a more robust explanation for orthogonal SRC effects than motoric accounts.
    • End-state comfort hypothesis is less likely to explain mental rotation findings.
    • Salient features and referential coding offer a comprehensive explanation for observed orthogonal SRC effects.