Keywords
test item difficulty
discrimination index
item discrimination coefficient
reliability
validity
representativeness
norm-referenced testing
psychodiagnostic methods
How to Cite
Abstract
The article examines the principal psychometric indicators of test item quality, including item difficulty, the discrimination coefficient, the discrimination index, reliability, validity, and representativeness, as applied in the development and adaptation of psychodiagnostic instruments. Particular attention is given to discrimination as one of the key criteria for evaluating test item quality. Discrimination is defined as the ability of a test item to differentiate between examinees with high overall test scores and those with low scores. In other words, a high-quality item should contribute to a statistically significant distinction among respondents based on the level of the measured construct. The article further substantiates that, in norm-referenced educational testing–where the primary objective is to classify learners according to their level of knowledge–the discrimination index of each item constitutes a fundamentally important component of test quality assurance. It is the item’s capacity for differentiation that determines its diagnostic value and practical significance.
References
Зароченцев К.Д., Худяков А.И. Основы психометрии. – М., 2006. – 23 с.
Абрамова Г.С. Введение в практическую психодиагностику. – Брест, 2003. – 8 с.
Общая психодиагностика / Под ред. А.А. Бодалева, В.В. Столина. – М.: Изд-во МГУ, 2007. – 154 с.
Бодалев А.А., Столин В.А. Общая психодиагностика. – СПб., 2000. – 154 с.
Бурлачук Л.Ф. Психодиагностика: учебник для вузов. – СПб., 2005. – 300 с.
Вассерман Л.И., Дюк В.А., Иовлев Б.В., Червинская К.Р. Психологическая диагностика и новые информационные технологии. – СПб., 2007. – 203 с.
Гайда В.К., Захаров В.П. Психологический тест. – Л., 2002. – 298 с.
G‘oziyev E.G‘. Psixologiya. – T.: O‘zMU «Universitet», 2003. – 35 b.
G‘oziyev E.G‘. Umumiy psixologiya. – T.: O‘qituvchi, 2010. – 11 b.
Бурлачук Л.Ф., Морозов С.М. Словарь-справочник по психологической диагностике. – Киев: Наук. думка, 1989. – 200 с.
Анастази А., Урбина С. Психологическое тестирование. – СПб.: Питер, 2005. – 688 с.
Анастази А. Психологическое тестирование. Кн. 1. – М.: Педагогика, 1982. – 320 с.
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