Ferrando Pere J
Rovira i Virgili University, Facultad de Psicología, Tarragona, Spain.
Br J Math Stat Psychol. 2006 Nov;59(Pt 2):379-95. doi: 10.1348/000711005X64691.
This paper proposes two unidimensional item response theory (IRT) models for analysing normative forced-choice personality items. Both models are derived from a common theoretical framework and arise as a result of different assumptions regarding the mechanism of choice. The simplest mechanism gives rise to the one-parameter normal-ogive model. The second mechanism gives rise to a new IRT model, which is closely related to the Coombs-Zinnes probabilistic unfolding model. The second model is compared theoretically to the normal-ogive model in terms of item characteristic curves and amount of item information. Next, procedures for estimating the respondent and the item parameters in the second model are described. Finally, both models are empirically compared by using two well-known personality measures.
本文提出了两种用于分析标准化强迫选择人格项目的一维项目反应理论（IRT）模型。这两种模型都源自一个共同的理论框架，并且是由于对选择机制的不同假设而产生的。最简单的机制产生了单参数正态卵形模型。第二种机制产生了一种新的IRT模型，它与库姆斯 - 津尼斯概率展开模型密切相关。从项目特征曲线和项目信息量方面，将第二种模型与正态卵形模型进行了理论比较。接下来，描述了估计第二种模型中被试和项目参数的程序。最后，通过使用两种著名的人格测量方法对这两种模型进行了实证比较。
