"(Created by APA) This book was prepared as a text for a graduate-level course at the State University of Iowa, taken principally by students of experimental psychology. The course, carrying the same title and having about the same scope as the book, was an outgrowth of the common observation that most graduate students of psychology are initially unable to digest theoretical and experimental papers containing anything beyond the most elementary of mathematical formulations. The book, although loaded with mathematical proofs, rules, and formulas, should not be regarded as a likely substitute for any regular text in mathematics. It is not the equivalent, for example, of an elementary text in calculus. It was not intended to be. The amount of straight mathematics included, as well as the kind, especially the sampling from calculus, was determined by the over-all aim of both the course and the book-to provide the student with enough information to enable him to begin using mathematical procedures in his scientific ventures and to whet his appetite for further knowledge of mathematics. (PsycINFO Database Record (c) 2008 APA, all rights reserved)."