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ERIC Number: EJ817341
Record Type: Journal
Publication Date: 2008
Pages: 26
Abstractor: As Provided
Reference Count: 14
ISSN: ISSN-0211-2159
Some Considerations on the Partial Credit Model
Verhelst, N. D.; Verstralen, H. H. F. M.
Psicologica: International Journal of Methodology and Experimental Psychology, v29 n2 p229-254 2008
The Partial Credit Model (PCM) is sometimes interpreted as a model for stepwise solution of polytomously scored items, where the item parameters are interpreted as difficulties of the steps. It is argued that this interpretation is not justified. A model for stepwise solution is discussed. It is shown that the PCM is suited to model sums of binary responses which are not supposed to be stochastically independent. As a practical result, a statistical test of stochastic independence in the Rasch model is derived. (Contains 2 tables and 3 figures.)
University of Valencia. Dept. Metodologia, Facultad de Psicologia, Avda. Blasco Ibanez 21, 46010 Valencia, Spain. Tel: +34-96-386-4100; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A