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Related Experiment Videos

Consciousness is slower than you think.

Patrick Rabbitt1

  • 1Age and Cognitive Performance Research Centre, Manchester University, UK. rabbitt@psy.man.ac.uk

The Quarterly Journal of Experimental Psychology. A, Human Experimental Psychology
|November 8, 2002
PubMed
Summary
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See all related articles

Young adults can correct most errors, but struggle to signal or remember them. Old age impairs error signaling and recall accuracy, though error correction remains intact.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Factors

Background:

  • In choice reaction time tasks (CRT), individuals can correct errors or signal them.
  • Young adults excel at error correction but are less adept at error signaling and recall.
  • Age-related differences exist in error processing, particularly in signaling and recall.

Purpose of the Study:

  • To investigate age-related differences in error processing, specifically error correction, signaling, and recall.
  • To examine the impact of response-signal interval (RSI) on error processing in young and older adults.
  • To determine the time course required for conscious error awareness and signaling.

Main Methods:

  • Participants: 40 young adults (mean age 20.1) and 40 older adults (mean age 71.2).

Related Experiment Videos

  • Task: Serial choice reaction time task (CRT) with varying response-signal intervals (RSIs) from 150 ms to 1000 ms.
  • Measures: Accuracy of error correction, error signaling, and error recall.

    • Main Results:

    • Young adults accurately corrected most errors but were less accurate in signaling and recalling them.
    • Older adults showed reduced accuracy in error signaling and recall compared to young adults.
    • Both age groups demonstrated improved error signaling and recall with increased RSIs, reaching asymptotes at 800 ms (young) and 1000 ms (older).

    Conclusions:

    • Conscious error signaling and recall require more than 150 ms and are negatively impacted by old age.
    • Sufficient time (800-1000 ms) between an incorrect response and the next signal is crucial for effective error processing.
    • Cognitive processes for deliberate error management are sensitive to age and temporal constraints.