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Educational and Psychological Measurement
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Measurement of Epistemological Beliefs

Psychometric Properties of the EQEBI Test Scores

Xavier G. Ordoñez

Universidad Complutense de Madrid, Spain

Vicente Ponsoda

Universidad Autonoma de Madrid, Spain, vicente.ponsoda{at}uam.es

Francisco J. Abad

Universidad Autonoma de Madrid, Spain

Sonia J. Romero

Universidad Autonoma de Madrid, Spain

This article proposes a new test (called the EQEBI) for the measurement of epistemological beliefs, integrating and extending the Epistemological Questionnaire (EQ) and the Epistemic Beliefs Inventory (EBI). In Study 1, the two tests were translated and applied to a Spanish-speaking sample. A detailed dimensionality exploration, by means of the monotone homogeneity model and confirmatory factor analysis, provides unexpected dimensionality results. Therefore, a new test is proposed, and the dimensionality and psychometric properties of the test's scores are determined. The new test retains four of the five original dimensions. The EQEBI has 27 items, and its score reliability is higher than that of the original EQ and EBI. In Study 2, the EQEBI was applied to another sample to verify the psychometric properties of the obtained scores. The expected four unidimensional scales are confirmed. The scales are calibrated with the graded response model. Recommendations are offered for using the scales for epistemological beliefs assessment.

Key Words: epistemological beliefs • graded response model • monotone homogeneity model • confirmatory factor analysis

This version was published on April 1, 2009

Educational and Psychological Measurement, Vol. 69, No. 2, 287-302 (2009)
DOI: 10.1177/0013164408323226
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