The role of psychometric indicators in assessing the quality of psychodiagnostic methods

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. The article further substantiates that, in norm-referenced educational testing, the discrimination index of each item constitutes a fundamentally important component of test quality assurance. Значение психометрических показателей в оценке качества психодиагностических методов. В статье рассматриваются основные психометрические показатели качества тестовых заданий, включая сложность, коэффициент дискриминации, индекс дискриминации, надежность, валидность и репрезентативность.

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