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Related Experiment Videos

When less is more: representation and selective memory in expert problem solving

F Hassebrock1, P E Johnson, P Bullemer

  • 1Denison University.

The American Journal of Psychology
|January 1, 1993
PubMed
Summary
This summary is machine-generated.

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Expert physicians demonstrate selective memory for diagnostic reasoning, recalling fewer details but retaining case information relevant to their problem-solving approach over time. This highlights the impact of domain-specific knowledge on memory in medical expertise.

Area of Science:

  • Cognitive Psychology
  • Medical Education
  • Expertise Studies

Background:

  • Limited research exists on how domain-specific knowledge influences problem representation and memory in professional expertise.
  • Understanding the interplay between knowledge, problem-solving, and memory is crucial for developing effective training.

Purpose of the Study:

  • To assess the contribution of domain-specific knowledge to problem representation and memory in medical problem-solving.
  • To compare novice, trainee, and expert physicians' diagnostic reasoning and recall of case information.

Main Methods:

  • Participants (novice, trainee, expert physicians) solved complex diagnostic problems.
  • Thinking-aloud protocols analyzed to identify "lines of reasoning" (problem representations).
  • Incidental free recall of case information tested immediately and one week later.

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Main Results:

  • No group differences in immediate information recall or selective recall for relevant information.
  • Experts recalled fewer units after one week but selectively retained information aligned with their reasoning.
  • Experts showed improved recall of diagnostic interpretations; novices did not link recall to their reasoning.

Conclusions:

  • Expertise in medicine involves developing specialized problem representations that influence long-term memory for case information.
  • While novices recall more raw data initially, experts demonstrate a more sophisticated, reasoning-driven memory consolidation process.
  • Domain-specific knowledge shapes how experts encode, store, and retrieve information critical for diagnosis.