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New Construction of the POA Personality Questionnaire Based on the Rasch Model

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Ożarowski W.

The New Educational Review

2006

vol. 10

115-130

This paper discusses the usefulness of methodological seizing based on the logistic Rasch model in constructing of a new diagnostic tool: POA questionnaire (Pomiar Osobowości Autorskiej) is designed to examine the author’s personality based on Kazimierz Obuchowski’s personality theory. Basic foundations of the Rasch model will be presented, the information of theoretical and empirical bases of the new tool and example-results obtained using this model with reference to the created personality questionnaire. A theoretical basis of the psychological measurement was item response theory (IRT) – one of the theories of latent classes. The Rasch model comes from this theory. The psychometric properties of the data based on 2316 people investigated were analyzed using the computer programmes WINMIRA (supported by SPSS) and Mixed Rasch Model (MIRA). Both programmes were then used for scale development and validation. WINMIRA was used to examine the degree of fitting of the model to the POA questionnaire. Then it was possible to make the practical valuation of suitable parameters of the Rasch model by maximum likelihood methods using a series of iterative procedures.

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1 The New Educational Review

1 Ożarowski W.

1 2006

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New Construction of the POA Personality Questionnaire Based on the Rasch Model