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Keyword: «rasch model»

THE PRECISION OF MEASURING THE RASCH MODEL PARAMETERS WHEN THE DIFFICULTY OF TEST TASKS ADEQUATE TO THE LEVEL OF TRAINEES PERFORMANCE
Authors: Uliya Fevraleva, Anatolii Maslak
The aim of the work is to determine the precision of measurement of latent variables. A comparative analysis of the classical theory of testing and the theory of latent variables is given. The study is based on a simulation experiment within the framework of the theory of latent variables.
Keywords: evaluation criteria, rasch model, latent variable, measurement precision
STATISTICAL CHARACTERISTICS OF THE LEVEL OF PERFORMANCE OF TRAINEES DEPENDING ON THE DIFFICULTY OF THE TEST
Authors: Natalya Homyakova, Anatolii Maslak
The procedure for modeling test results based on the Rasch model is considered. The simulation results are processed within the framework of the theory of latent variables. Model values of the level of testees’ performance, their estimates, as well as estimates errors of the level of performance are approximated by linear models. It is shown that poorly prepared testees are evaluated with less precision than more prepared ones.
Keywords: rasch model, latent variable, level of performance, measurement error
THE RELEVANCE OF USING THE THEORY OF LATENT VARIABLES IN SOCIAL SYSTEMS
Authors: Anatolii Maslak, Stepan Volkov
The features of measuring latent variables in social systems are considered. The key concepts that are used in the theory of measurement of latent variables are shown. Examples of the use of this theory in education and other social systems are given.
Keywords: rasch model, latent variables, measurement, invariance