PSYCHOMETRIC ANALYSIS OF TEST ITEMS IN «PHYSICS» SUBJECT

Abstract

The article presents a psychometric analysis of test items to enhance the reliability and validity of test materials used in the Unified National Testing (UNT). Psychometric analysis is based on data obtained using adapted test options used during UNT approbation in 2022. As a result, the difficulty coefficient of test items was determined, a distractor analysis was conducted, and recommendations were provided to improve test performance quality and examinees' mastery of specific topics. This is essential for evaluating the quality of test items, the correctness of their design, and their level of difficulty in relation to the examinees. To achieve this, a psychometric analysis of adapted test items was conducted. Statistical processing was performed using the WINSTEPS software. The analysis included an evaluation of difficulty coefficients and distractor analysis of test items, along with recommendations for improving test performance quality and examinees' comprehension of specific topics. In addition, in order to improve the quality of preparation for testing, since 2022 the NTC introduced a separate thematic analysis of test results. After the exam, graduates were able to review not only their correct and incorrect answers but also a comprehensive analysis of their UNT results. This allowed examinees to identify their weaknesses in specific subjects.