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Online Calibration of Polytomous Items Under the Generalized Partial Credit Model [PDF]

Applied Psychological Measurement, 2016
Yi Zheng
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Partial Credit Model

2016
For some measuring instruments, item responses may reflect a degree of correctness (or a degree of appropriateness in the case of survey questionnaires) in the answer to a question, rather than being simply classified as correct/incorrect.
Margaret Wu, Hak Ping Tam, Tsung-Hau Jen
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The Partial Credit Model

1997
The Partial Credit Model (PCM) is a unidimensional model for the analysis of responses recorded in two or more ordered categories. In this sense, the model is designed for the same purpose as several other models in this book, including Samejima’s graded response model (Samejima, 1969).
Geofferey N. Masters, Benjamin D. Wright
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The Hills…with the Partial Credit Model

2020
In Rasch Analysis in the Human Sciences we discussed at length the use of what we named “The Hills” (Chap. 9 How Well Does That Rating Scale Work? How Do You Know, Too?). The Hills provide a technique by which analysts can evaluate how each rating scale step is helping to measure each respondent.
William J. Boone, John R. Staver
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A Steps Model to Analyze Partial Credit

1997
The partial credit model (PCM) by Masters (1982, this volume) is a unidimensional item response model for analyzing responses scored in two or more ordered categories. The model has some very desirable properties: it is an exponential family, so minimal sufficient statistics for both the item and person parameters exist, and it allows conditional ...
Verhelst, N.D., Glas, Cornelis A.W., de Vries, H.H.   +2 more
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A computer implementation of the generalized partial credit model

Proceedings of the 5th international conference on Computer systems and technologies - CompSysTech '04, 2004
Generalised Partial Credit Model (GPCM) is used in the case of a test with graded response categories. It is a generalization of both -- the graded response model and the two-parametric logistic model and in this way it seems to be one of the most useful models with respect to the psychological scales.
Lyubomir Christov, Dimiter Tsvetkov
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Partial Credit Model

1999
The partial credit model (PCM) is a model for constructing measures using items with two or more ordered response categories; that is, items scored polytomously. The model is a simple application of Rasch’s model for dichotomies (Volume One, Chapter 3). Specifically, if responses to item i are recorded in categories a = 0, 1, … Ai, then the probability
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The Partial Credit Model and Null Categories

Psychometrika, 1993
A category where the frequency of responses is zero, either for sampling or structural reasons, will be called a null category. One approach for ordered polytomous item response models is to downcode the categories (i.e., reduce the score of each category above the null category by one), thus altering the relationship between the substantive framework ...
Mark Wilson, Geofferey N. Masters
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Parameter estimation for finite mixtures of partial credit models

Proceedings of the 2007 international conference on Computer systems and technologies - CompSysTech '07, 2007
We consider a test of finite length and assume that each item has m ≥ 2 graded response categories which satisfy the Partial Credit Model (PCM) from the Item Response Theory [1--4] and also that there exist K population classes which differ in the parameter values.
Dimiter Tsvetkov, Lyubomir Hristov
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An Extension of the Partial Credit Model with an Application to the Measurement of Change

Psychometrika, 1994
The partial credit model is considered under the assumption of a certain linear decomposition of the item × category parameters δih into “basic parameters” αj. This model is referred to as the “linear partial credit model”. A conditional maximum likelihood algorithm for estimation of the αj is presented, based on (a) recurrences for the combinatorial ...
Fischer, Gerhard H., Ponocny, Ivo
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