Item analysis is a psychometric procedure used to judge item and sub-scale validity. We are able to determine how the item functioned on a given population.

Such data might be used in calibration and piloting of items.

There are two broad models that govern item analysis-Classical test theory and item response Theory.

Compare item analysis based on Classical test Theory and Item Response Theory

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Useful Powerpoint

Frank Baker's book-the basics of IRT

Useful Manual

More Readings

A MUST READ

-A VISUAL GUIDE TO ITEM RESPONSE THEORY

A Snapshot from this book

See also

Data Analysis Using IRT

Basic IRT Concepts and Models

John Donoghue-Empirical Examination of IRT Information in Polytomous Scored Readings Tests

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