An Item Response Theory Analysis of The Questionnaire of God Representations

Schaap-Jonker, H., Egberink, I. J. L., Braam, A. W. & Corveleyn, J. M. T., 2016, In : The International Journal for the Psychology of Religion. 26, 2, p. 152-166

Research output: Contribution to journalArticleAcademicpeer-review

The Dutch Questionnaire of God Representations (QGR) was investigated by
means of item response theory (IRT) modeling in a clinical (n = 329) and a
nonclinical sample (n = 792). Through a graded responsemodel and IRT-based
differential functioning techniques, detailed item-level analyses and information
about measurement invariance between the clinical and nonclinical
sample were obtained. On the basis of the results of the IRT analyses, a
shortened version of the QGR (S-QGR) was constructed, consisting of 22
items, which functions in the same way in both the clinical and the nonclinical
sample. Results indicated that the QGR consists of strong and reliable scales
which are able to differentiate among persons. Psychometric characteristics of
the S-QGR were adequate.
Original languageEnglish
Pages (from-to)152-166
JournalThe International Journal for the Psychology of Religion
Issue number2
Publication statusPublished - 2016

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