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Related Experiment Videos

Within session practice effects on the PASAT in clients with multiple sclerosis.

Suzanne L Barker-Collo1

  • 1Department of Psychology, The University of Auckland, Private Bag 92019, Auckland, New Zealand. s.barker-collo@auckland.ac.nz

Archives of Clinical Neuropsychology : the Official Journal of the National Academy of Neuropsychologists
|February 15, 2005
PubMed
Summary

Practice effects significantly impact the Paced Auditory Serial Addition Test (PASAT) in multiple sclerosis (MS) patients. Serial PASAT use in MS requires adjustments for practice effects, especially at faster speeds.

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Area of Science:

  • Neuroscience
  • Clinical Neurology
  • Rehabilitation Science

Background:

  • Information processing speed (IPS) impairments are prevalent in multiple sclerosis (MS).
  • The Paced Auditory Serial Addition Test (PASAT) is a key measure for assessing IPS in MS, recommended for serial evaluations.
  • The PASAT's susceptibility to practice effects poses a challenge for accurate serial assessment in MS.

Purpose of the Study:

  • To investigate within-session practice effects of the PASAT in individuals with MS.
  • To determine if practice effects differ between MS subtypes (relapsing-remitting vs. chronic-progressive).

Main Methods:

  • Thirty individuals diagnosed with MS participated in the study.
  • The Paced Auditory Serial Addition Test (PASAT) was administered multiple times within a single session.

Related Experiment Videos

  • Performance on different PASAT trial speeds was analyzed to identify practice effects.

    • Main Results:

    • Significant practice effects were observed across most PASAT trials, excluding the slowest presentation speed.
    • Individuals with relapsing-remitting MS demonstrated greater improvement from repeated PASAT assessments compared to those with chronic-progressive MS, except on the slowest trial.
    • Faster PASAT presentation speeds exhibited more pronounced practice effects.

    Conclusions:

    • The PASAT is significantly influenced by practice effects during serial assessments in MS.
    • To ensure reliable serial monitoring of IPS in MS, clinicians should consider using slower PASAT presentation speeds or implement corrections for practice effects.
    • Understanding and accounting for practice effects are crucial for accurate interpretation of PASAT results in MS research and clinical practice.