RATING FORMULATION FOR ORDERED RESPONSE CATEGORIES
RATING FORMULATION FOR ORDERED RESPONSE CATEGORIES
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DOI：
10.1007/bf02293814
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发表时间：
1978-01-01
期刊：
影响因子：
3
通讯作者：
ANDRICH, D
中科院分区：
文献类型：
--
作者：
ANDRICH, D
本文提出了一种与传统的阈值公式有关但又有明显区别的有序范畴的等级反应机制。除了主题和项目参数的其他两组参数，这可以解释在潜在的连续和歧视的阈值方面的阈值，获得。这些参数被确定的类别系数和评分函数的Rasch模型的polychotomous的反应，其中的潜在特质是假设一维的。在阈值区分度相等的情况下，通过连续整数的熟悉分配对连续类别进行评分是合理的。在阈值之间的距离也相等的情况下，一个简单的模式的类别系数示出如下。
A rating response mechanism for ordered categories, which is related to the traditional threshold formulation but distinctively different from it, is formulated. In addition to the subject and item parameters two other sets of parameters, which can be interpreted in terms of thresholds on a latent continuum and discriminations at the thresholds, are obtained. These parameters are identified with the category coefficients and the scoring function of the Rasch model for polychotomous responses in which the latent trait is assumed uni-dimensional. In the case where the threshold discriminations are equal, the scoring of successive categories by the familiar assignment of successive integers is justified. In the case where distances between thresholds are also equal, a simple pattern of category coefficients is shown to follow.