Partial Credit Model

Geoff N Masters

doi:10.1201/9781315374512-10

Partial Credit Model

Geoff N Masters

Australian Council for Educational Research (ACER)

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

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. Specifically, if responses to item i are recorded in categories a = 0, 1, … Ai , then the probability of a person's response to item i being in category x rather than in category x − 1 is modeled by the PCM, as being governed by Rasch's model for dichotomies.

Original language	English
Title of host publication	Handbook of Item Response Theory
DOIs	https://doi.org/10.1201/9781315374512-10
Publication status	Published - Aug 2016

Keywords

Rasch
dichotomies
measurement

Disciplines

Educational Assessment, Evaluation, and Research

Access to Document

10.1201/9781315374512-10Licence: Unspecified

https://www.routledgehandbooks.com/doi/10.1201/9781315374512-10

Cite this

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title = "Partial Credit Model",

abstract = " 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. Specifically, if responses to item i are recorded in categories a = 0, 1, … Ai , then the probability of a person's response to item i being in category x rather than in category x − 1 is modeled by the PCM, as being governed by Rasch's model for dichotomies.",

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note = "Drawing on the work of internationally acclaimed experts in the field, this first volume in a three-volume set presents all major item response models. It covers many model developments that have occurred in the field during the last 20 years. Masters, Geoff N. (2016). Partial Credit Model, in Handbook of Item Response Theory ed. Wim J. van der Linden (Boca Raton: CRC Press, 15 Aug 2016 ), Routledge Handbooks Online. doi: 10.1201/9781315374512-10",

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