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Qualitative differences in knowledge structure are associated with diagnostic performance in medical students.
Sylvain Coderre1, Deirdre Jenkins, Kevin McLaughlin
1Undergraduate Medical Education Office, University of Calgary, Calgary, AB, Canada.
Advances in Health Sciences Education : Theory and Practice
|December 25, 2008
Summary
Final year medical students with problem-specific knowledge structures demonstrated superior diagnostic performance compared to those with generic structures. This suggests organizing medical knowledge around specific clinical problems enhances diagnostic skills.
Area of Science:
- Medical Education
- Cognitive Science
- Clinical Diagnostics
Background:
- Diagnostic skill relies on retrieving and applying knowledge from long-term memory.
- Expertise research indicates differences in knowledge structure between novices and experts.
- Superior diagnostic performance in experts is hypothesized to stem from their knowledge structure.
Purpose of the Study:
- To investigate knowledge structure in final year medical students.
- To determine the association between knowledge structure and diagnostic performance.
Main Methods:
- Ninety-one final year medical students participated in the study.
- Concept sorting was employed to assess knowledge structures for four distinct clinical problems.
- Knowledge structures were qualitatively analyzed and categorized as problem-specific or generic.
- Diagnostic performance was evaluated using problem-solving questions.
Main Results:
- Most students exhibited a problem-specific knowledge structure for each clinical problem.
- Students with problem-specific structures achieved significantly better diagnostic performance (68.5%) than those with generic structures (55.3%).
- This association remained significant after controlling for overall medical knowledge and specific clinical problems.
Conclusions:
- The majority of medical students organize their knowledge around problem-specific concepts.
- A problem-specific knowledge structure is positively associated with enhanced diagnostic performance.
- Congruence between knowledge storage and application may facilitate easier knowledge retrieval during diagnosis.
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