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Related Experiment Videos

The reliability and validity of the self-ordered pointing task.

Thomas P Ross1, Eva Hanouskova, Kat Giarla

  • 1Department of Psychology, College of Charleston, 66 George Street, Charleston, SC 29424, United States. rosstp@cofc.edu

Archives of Clinical Neuropsychology : the Official Journal of the National Academy of Neuropsychologists
|February 27, 2007
PubMed
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The Self-Ordered Pointing Task (SOPT) shows good reliability for total errors, suggesting it measures working memory more than executive functions. Further research is needed for other SOPT measures.

Area of Science:

  • Neuropsychology
  • Cognitive Psychology

Background:

  • The Self-Ordered Pointing Task (SOPT) is a neuropsychological tool used to assess executive functions and working memory.
  • Previous research has explored SOPT performance in individuals with brain lesions, but its psychometric properties in healthy populations require further examination.

Purpose of the Study:

  • To examine the reliability and validity of the abstract design version of the Self-Ordered Pointing Task (SOPT) in healthy college students.
  • To determine which SOPT indices are most reliable and to explore its relationship with working memory and executive functioning.

Main Methods:

  • 170 healthy college students completed the SOPT.
  • Test-retest reliability was assessed in a subset of 93 students after an average interval of 42.7 days.
  • SOPT scores were correlated with measures of working memory, verbal learning, visuospatial ability, and executive functioning.

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Main Results:

  • The SOPT total error score demonstrated good test-retest reliability (r(icc)=.82).
  • Other SOPT indices, such as span score and perseverations, showed modest to poor stability.
  • A small practice effect was observed upon retesting.
  • SOPT scores correlated with working memory and some executive functions (strategy utilization, planning) but not others (cognitive flexibility, interference control).

Conclusions:

  • The total error score of the SOPT is a reliable index for use in healthy individuals.
  • SOPT performance is more closely associated with working memory than executive functioning, though it may tap into common elements of both.
  • Findings support the use of the SOPT total error score and suggest its utility in assessing working memory.