Handbook of Item Response Theory Modeling

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This handbook reviews classic and emerging IRT methods and applications that are revolutionizing psychological measurement, particularly for health outcome assessments used to demonstrate treatment effectiveness. Conceptual and statistical issues confronting researchers in psychology, education, and medicine are addressed including multidimensional and explanatory models. World renowned contributors offer examples using real data, some from NIH-PROMIS. The book reviews the most significant IRT models and the obstacles that arise in their application. Each chapter reviews the current literature and describes related research methods, applies the material, and suggests future directions.