The Handbook of Diagnostic Classification Models represents a collection of chapters reviewing diagnostic models, their applications, and descriptions of software tool, written by leading experts in the field. This volume covers most (one can never claim completeness) of the current major modeling families and approaches as well as provides a resource that can be used for self-study, teaching, or research that applies or extends the materials included in the book. While virtually any project of this type takes longer than expected, and many will be tempted to remind us that Murphy’s law strikes...