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Watching diagnoses develop: Eye movements reveal symptom processing during diagnostic reasoning.

Agnes Scholz1, Josef F Krems2, Georg Jahn2

  • 1Department of Psychology, University of Zurich, Zurich, Switzerland. agnespscholz@gmail.com.

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Summary

This study reveals how people process ambiguous symptoms by maximizing coherence for a single explanation. Eye-tracking (memory indexing) showed how gaze patterns reflect cognitive processing during diagnosis.

Keywords:
Coherence maximizationDiagnostic reasoningEye movementsMemory indexingProcess tracing

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Area of Science:

  • Cognitive Psychology
  • Medical Diagnosis
  • Human Information Processing

Background:

  • Diagnosing symptoms involves complex memory retrieval and interpretation.
  • Individuals tend to favor single, coherent explanations for observed symptoms.
  • Limited process data exists for tracing coherence maximization in ambiguous diagnostic scenarios.

Purpose of the Study:

  • To investigate cognitive processes during ambiguous symptom interpretation.
  • To provide empirical evidence for coherence maximization in diagnostic reasoning.
  • To explore the utility of memory indexing for studying memory-based cognitive processing.

Main Methods:

  • Employed memory indexing, an eye-tracking technique, to capture real-time cognitive processing.
  • Participants learned symptom-cause information presented in spatial frames.
  • Gaze allocation during symptom processing and diagnostic response was analyzed.

Main Results:

  • Gaze patterns reflected the subjective status of hypotheses and interpretation of ambiguous symptoms.
  • Memory indexing successfully traced the development of diagnostic decisions.
  • Observed instances of hypothesis change and biases in symptom processing.

Conclusions:

  • Memory indexing provides direct online evidence for coherence maximization in ambiguous information processing.
  • The study demonstrates how cognitive biases influence diagnostic reasoning.
  • Eye-tracking methods offer valuable insights into higher-order cognitive functions like diagnosis.