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Pyschometric References

Psychometric References

Crocker, L., & Algina, J. (1986). Introduction to classical and modern test theory. Belmont, CA: Wadsworth.

De Ayala, R. J. (2009). The theory and practice of item response theory. New York: Guilford Press.

Joint Committee on Standards for Educational and Psychological Testing of the American Educational Research Association, the American Psychological Association, and the National Council on Measurement in Education. (1999). Standards for educational and psychological testing. Washington, DC: American Educational Research Association.

Lord, F. (1983). Unbiased estimators of ability parameters, of their variance, and of their parallel-forms reliability. Psychometrika, 48, 233-246.


Classical item analysis at the Instructional Assessment Resources (IAR).


Iteman is stand-alone software designed to provide detailed item and test analysis reports using classical test theory (CTT). $

Lertap is an Excel-based CTT item, test, and survey analysis application. $

Xcalibre is stand-alone software for item response theory (IRT) analysis of assessment data. $

This page last updated 23rd Apr 2014