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Related Experiment Videos

Multiple spatial correspondence effects on dual-task performance.

M C Lien1, R W Proctor

  • 1Department of Psychological Sciences, Purdue University, West Lafayette, Indiana 47907-1364, USA. lien@psych.purdue.edu

Journal of Experimental Psychology. Human Perception and Performance
|August 18, 2000
PubMed
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This study investigated dual-task interference, finding the Simon effect interacts with stimulus onset asynchrony (SOA) differently than predicted. The reverse Simon effect did not align with the dual-process model, suggesting automatic stimulus-response translation.

Area of Science:

  • Cognitive Psychology
  • Human Performance
  • Neuroscience

Background:

  • The Simon effect, a common finding in cognitive psychology, demonstrates interference in stimulus-response compatibility.
  • Stimulus onset asynchrony (SOA) is a critical factor influencing performance in dual-task paradigms.
  • Existing dual-process models predict specific interactions between the Simon effect and SOA.

Purpose of the Study:

  • To test whether the underadditive interaction of the Simon effect and SOA in dual-task performance is attributable to decay.
  • To investigate if the reverse Simon effect exhibits an overadditive interaction with SOA, as predicted by the dual-process model.
  • To evaluate the applicability of the dual-process model in a dual-task context.

Main Methods:

  • Three dual-task experiments were designed to manipulate the Simon effect and SOA.

Related Experiment Videos

  • Task 1 involved tone or letter identification with vocal or keypress responses.
  • Task 2 required keypress responses to arrow direction or letter identity.

    • Main Results:

    • The normal Simon effect consistently showed an underadditive interaction with SOA across all experiments.
    • The reverse Simon effect did not demonstrate the predicted overadditive interaction with SOA.
    • The findings challenge the predictions of the dual-process model in this dual-task setting.

    Conclusions:

    • The dual-process model, as proposed by De Jong et al. (1994), appears not to be applicable to the dual-task context examined.
    • The observed multiple correspondence effects suggest that automatic stimulus-response (S-R) translation may provide a more fitting explanation.
    • Further research is needed to fully elucidate the mechanisms underlying dual-task interference and the Simon effect.