Presenting a complete treatment of theory and applications for measurement error problems, this new and expanded Second Edition reflects the latest research and advances in the field that has been ongoing for the past twenty years. Updated to include new sections on resampling methods, estimating equations, and latent modeling of categorical variables, this critically acclaimed text provides practicing statisticians, engineers, economericians, psychologists, mathematicians, and graduate students with complete and thorough coverage of estimation for situations where the model variables observed are subject to measurement error.