Guided Reflection Interventions Show No Effect on Diagnostic Accuracy in Medical Students

Area of Science:

• Medical Education
• Diagnostic Reasoning
• Cognitive Psychology

Background:

• Guided reflection aims to reduce diagnostic error by encouraging hypothesis generation and evidence gathering.
• While effective in some studies, it is time-consuming and may introduce cognitive biases.
• This study evaluated short and long guided reflection tasks for diagnostic accuracy and confidence.

Purpose of the Study:

• To compare the effectiveness of short and long guided reflection tasks on diagnostic accuracy.
• To assess the impact on diagnostic confidence and the rate of corrected diagnoses.
• To determine if guided reflection aids novice diagnosticians.

Main Methods:

• 186 medical students diagnosed fictional cases using first impressions, short (2 alternatives), or long (6 alternatives) guided reflection.
• Confidence in initial diagnostic hypotheses was rated throughout the process.
• Diagnostic accuracy, confidence changes, and corrected diagnoses were compared across conditions.

Main Results:

• Guided reflection did not improve final diagnostic accuracy compared to first impressions.
• Short and long versions of the task yielded similar results.
• No significant changes in diagnostic confidence or corrected diagnoses were observed across conditions.

Conclusions:

• Guided reflection showed no benefit for novice diagnosticians in this study.
• The intervention may be less effective for those already employing analytical diagnostic approaches.
• Further research is needed to identify efficient diagnostic aid processes for physicians.