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Asymmetric item characteristic curve in item response theory: model construction and application

机译:项目响应理论中的非对称项目特征曲线:模型构建与应用

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Most of the models used in the Item Response Theory assume point-symmetry of the Item Characteristic Curve. Although the convenience of such models is obvious a priori assumption of symmetry does not always correspond to an experimental data. In many cases we deal with obviously skewed distribution and the usage of symmetric models involves inevitable errors both in experimental studies and in test constructing. The applicability of the asymmetric model for the analysis of test items is discussed in the present study. Data obtained from Raven's Advanced Progressive Matrices (N=365) are used to illustrate the analysis.
机译:项目响应理论中使用的大多数模型都假定项目特征曲线为点对称。尽管此类模型的便利性显而易见,但对称性的先验假设并不总是与实验数据相对应。在许多情况下,我们处理明显偏斜的分布,对称模型的使用在实验研究和测试构建中都不可避免地会出现错误。在本研究中讨论了非对称模型在测试项目分析中的适用性。从Raven的高级渐进矩阵(N = 365)获得的数据用于说明分析。

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