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Related Experiment Videos

On testing the face validity of planning/problem-solving tasks in a normal population

K L Kafer1, M Hunter

  • 1Department of Psychology, University of Newcastle, NSW, Australia.

Journal of the International Neuropsychological Society : JINS
|March 1, 1997
PubMed
Summary

This study questioned the reliability of common executive function tests in adults. Findings suggest current planning and problem-solving tests may not accurately measure these cognitive abilities.

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Area of Science:

  • Neuroscience
  • Psychology
  • Cognitive Science

Background:

  • Clinical assessment of executive functions often relies on tests with apparent validity.
  • Reliable measurement of executive functions in clinical populations requires validation in normal populations.
  • The psychometric properties of widely used executive function tests need rigorous evaluation.

Purpose of the Study:

  • To investigate the reliability and psychometric structure of four tests commonly used to assess planning and problem-solving.
  • To evaluate the construct validity of planning/problem-solving using structural equation modeling.
  • To determine if established tests accurately measure the latent construct of planning/problem-solving in healthy adults.

Main Methods:

  • Administered four planning/problem-solving tests (Tower of London Test, Six Element Test, Twenty Questions Test, Rey Complex Figure Test) to 130 healthy adults (ages 17-55).

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  • Employed structural equation modeling (LISREL 8) to assess three hypothesized models of the planning/problem-solving construct.
  • Examined the relationships among test variables and the latent construct of planning/problem-solving.

    • Main Results:

    • An adequate structural equation model could not be estimated for the planning/problem-solving construct.
    • The study raises significant questions regarding the psychometric structure of the Tower of London Test.
    • The findings challenge the assumed measurement properties of the executive function tests used.

    Conclusions:

    • The reliability and validity of commonly used planning/problem-solving tests are questionable.
    • Further research is needed to develop and validate robust measures of executive functions.
    • Clinical interpretation of results from these tests should be approached with caution due to psychometric limitations.