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A New Class of Parametric IRT Models for Dichotomous Item Scores

机译:一类新的用于二分项目得分的参数化IRT模型

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摘要

A new class of parametric IRT models for dichotomously scored items is presented. The new class of models is a subclass of both the class of models defined by the four-parameter logistic item response function and the nonparametric Double Monotonicity (DM) model. Three special cases of this new class of models are discussed. One of these special cases is shown to be the one-parameter logistic Rasch model. Both specific objectivity at the interval level of measurement and the sufficiency of the total score for the latent trait are shown to be measurement properties of the whole new class of models. For maximum likelihood estimation of the model parameters, both a joint and a conditional likelihood function are proposed.
机译:提出了一类新的用于二分计分项目的参数化IRT模型。新的模型类别是由四参数逻辑项目响应函数和非参数双单调(DM)模型定义的模型类别的子类。讨论了此类新模型的三种特殊情况。这些特殊情况之一显示为一参数对数Rasch模型。测量间隔水平的特定客观性和潜在特征总分的充分性均显示为整个新模型类别的测量属性。为了最大程度地估计模型参数,提出了联合和条件似然函数。

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