Do worked examples foster medical students' diagnostic knowledge of hyperthyroidism?

Area of Science:

• Medical Education
• Cognitive Science

Background:

• A prior study found that erroneous examples with elaborated feedback enhanced learning about hypertension.
• However, erroneous examples combined with knowledge of correct result (KCR) feedback impaired learning in the hypertension domain.

Purpose of the Study:

• To replicate findings from a hypertension learning study in the domain of hyperthyroidism.
• To determine the effectiveness of erroneous examples and feedback types (elaborated vs. KCR) on diagnostic knowledge acquisition in hyperthyroidism.

Main Methods:

• 124 medical students were randomly assigned to one of four conditions in a 2x2 design: errors vs. no errors and elaborated feedback vs. KCR feedback.
• Diagnostic knowledge was assessed using multiple-choice tests, key feature problems, and problem-solving tasks.
• Student acceptance and subjective learning were measured using rating scales.

Main Results:

• The combination of erroneous examples and elaborated feedback proved most effective for learning.
• Erroneous examples paired with KCR feedback significantly impaired knowledge acquisition.
• Students receiving elaborated feedback reported higher subjective learning outcomes compared to those receiving KCR feedback.

Conclusions:

• Erroneous examples coupled with elaborated feedback foster diagnostic knowledge in a computer-based learning environment.
• The 'learning from worked examples' approach is adaptable to complex domains like hyperthyroidism.
• This method effectively supports the acquisition of complex diagnostic competencies.