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The uniform prior for bayesian estimation of ability in item response theory models
(2019)
Item Response Theory (IRT) models traditionally assume a normal distribution for ability. Although normality is often a reasonable assumption for ability, it is rarely met for observed scores in educational and psychological ...
Mixture Rasch Model with main and interaction effects of covariates on latent class membership
(2019)
Covariates have been used in mixture IRT models to help explain why examinees are classed into different latent classes. Previous research has considered manifest variables as covariates in a mixture Rasch analysis for ...