This graduate-level textbook is a tutorial for item response theory that covers both the basics of item response theory and the use of R for preparing graphical

Item response theory (IRT) is widely used in education and psychology and is expanding its applications to other social science areas, medical research, and bus

Introduction to measurement -- The one-parameter model -- Joint maximum likelihood parameter estimation -- Marginal maximum likelihood parameter estimation -- T

By using familiar concepts from classical measurement methods and basic statistics, this book introduces the basics of item response theory (IRT) and explains t

A complete discussion of fundamental and advanced topics in Item Response Theory written by pioneers in the field In Item Response Theory, accomplished psychome