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ChatGPT as an item calibration tool: Psychometric insights in a high-stakes examination

2024·5 Zitationen·Medical Teacher
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5

Zitationen

6

Autoren

2024

Jahr

Abstract

INTRODUCTION: ChatGPT has attracted a lot of interest worldwide for its versatility in a range of natural language tasks, including in the education and evaluation industry. It can automate time- and labor-intensive tasks with clear economic and efficiency gains. METHODS: This study evaluated the potential of ChatGPT to automate psychometric analysis of test questions from the 2020 Portuguese National Residency Selection Exam (PNA). ChatGPT was queried 100 times with the 150 MCQ from the exam. Using ChatGPT's responses, difficulty indices were calculated for each question based on the proportion of correct answers. The predicted difficulty levels were compared to the actual difficulty levels of the 2020 exam MCQ's using methods from classical test theory. RESULTS: < .001), highlighting ChatGPT's potential for identifying less problematic questions. CONCLUSION: These findings unveiled ChatGPT's potential as a tool for assessment development, proving its capability to predict the psychometric characteristics of high-stakes test items in automated item calibration without pre-testing in real-life scenarios.

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