Abstract
Item response theory (IRT) models have been developed in order to study the individual responses to a set of items designed to measure latent abilities. IRT is a measurement theory that was first formalized in the sixties with the fundamental work of Lord and Novick (1968) and it has a predominant role in educational assessment (see van der Linden and Hambleton, 1997).
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Acknowledgments
The authors would like to thank the National Evaluation Institute for the School System (INVALSI) for the availability of the data used in the case study, and especially Roberto Ricci for his useful support in the data management and interpretation.
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© 2009 Physica-Verlag Heidelberg
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Matteucci, M., Mignani, S., Veldkamp, B.P. (2009). Issues on item response theory modelling. In: Monari, P., Bini, M., Piccolo, D., Salmaso, L. (eds) Statistical Methods for the Evaluation of Educational Services and Quality of Products. Contributions to Statistics. Physica, Heidelberg. https://doi.org/10.1007/978-3-7908-2385-1_3
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DOI: https://doi.org/10.1007/978-3-7908-2385-1_3
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