This book provides a thorough overview of item response theory methodology with a nice blend of theoretical psychometrics and practical applications the coverage is quite complete including the standard dichotomous and polytomous unidimensional models as well as multidimensional models the examples are very useful. This book provides a thorough overview of item response theory methodology with a nice blend of theoretical psychometrics and practical applications the coverage is quite complete including the standard dichotomous and polytomous unidimensional models as well as multidimensional models the examples are very useful. This book provides a thorough overview of item response theory methodology with a nice blend of theoretical psychometrics and practical applications the coverage is quite complete including the standard dichotomous and polytomous unidimensional models as well as multidimensional models the examples are very useful. Read book the theory and practice of item response theory methodology in the social sciences. Get this from a library the theory and practice of item response theory r j de ayala designed for researchers psychometric professionals and advanced students this book clearly presents both the how to and the why of item response theory irt it describes simple and more