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Download full textFerrando, Pere J.; Chico, Eliseo – Psicologica: International Journal of Methodology and Experimental Psychology, 2007
A theoretical advantage of item response theory (IRT) models is that trait estimates based on these models provide more test information than any other type of test score. It is still unclear, however, whether using IRT trait estimates improves external validity results in comparison with the results that can be obtained by using simple raw…
Descriptors: Validity, Raw Scores, Inferences, Item Response Theory
Direct linkFerrando, Pere J.; Lorenzo-Seva, Urbano – Psychological Methods, 2005
This article describes a general item response theory-based factor analytic procedure that allows assessment of the equivalence between 2 administrative modes of a questionnaire: paper and pencil, and Internet based. The theoretical relations between the present procedure and other methods used in previous empirical research are shown, and the…
Descriptors: Factor Analysis, Item Response Theory, Comparative Analysis, Computer Assisted Testing
