Measuring the Mind: Conceptual Issues in Contemporary Psychometrics[1] is a book by Dutch academic Denny Borsboom, Assistant Professor of Psychological Methods at the University of Amsterdam, at time of publication.

[2] The book discusses the extent to which psychology can measure mental attributes such as intelligence and examines the philosophical issues that arise from such attempts.

It covers the history and fundamental axioms of classical test theory and goes on to discuss the philosophical implications of true scores.

Borsboom describes the strengths and limitations of true scores in this way: Classical test theory was either one of the best ideas in twentieth-century psychology, or one of the worst mistakes.

The theory is mathematically elegant and conceptually simple, and in terms of its acceptance by psychologists, it is a psychometric success story.