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Using a conceptual framework during learning attenuates the loss of expert-type knowledge structure.

Kerry Novak1, Henry Mandin, Elizabeth Wilcox

  • 1University of Calgary, Calgary, Alberta, Canada. knovok@ucalgary.ca

BMC Medical Education
|July 20, 2006
PubMed
Summary

Using a diagnostic scheme helps medical students retain expert-type knowledge structure over time. This conceptual framework may prevent knowledge loss in medical education, aiding long-term learning.

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Area of Science:

  • Medical Education
  • Cognitive Science
  • Knowledge Management

Background:

  • Expert knowledge structures evolve from novice networks to abridged, concept-organized systems.
  • Medical students' knowledge organization changes significantly during their training.
  • The role of conceptual frameworks in maintaining expert knowledge requires investigation.

Purpose of the Study:

  • To analyze the one-year change in medical students' knowledge structure.
  • To determine if using a diagnostic scheme impacts long-term knowledge structure.
  • To explore the association between initial knowledge structure and long-term retention.

Main Methods:

  • Concept-sorting tasks assessed medical students' knowledge structure of metabolic alkalosis post-instruction and one year later.

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  • Knowledge structures were classified as 'expert-type' (>=2 shared concepts with experts) or 'novice-type' (<2 shared concepts).
  • Conditional logistic regression analyzed the relationship between short-term structure, diagnostic scheme use, and long-term structure.

    • Main Results:

    • Short-term knowledge structure did not predict long-term structure.
    • Diagnostic scheme use significantly increased the odds of expert-type long-term knowledge structure (OR 12.6, p=0.02).
    • Students not using a diagnostic scheme were more likely to transition from expert-type to novice-type knowledge.

    Conclusions:

    • Adoption of a diagnostic scheme may mitigate the decline of expert-type knowledge structures in medical students.
    • Conceptual frameworks appear crucial for preserving complex medical knowledge over extended periods.