This book is designed primarily to serve as a textbook for classes in vocational psychology. In the selection and presentation of material I have had in mind the fundamental problems of a psychological nature which confront both the employment manager and the vocational counselor. Although the former is chiefly concerned with the problem of selecting individuals fitted for given kinds of work, and the latter with helping individuals select the occupations for which they are best fitted, their main problems are essentially the same. Of equal importance to both are the ways in which individuals differ and the methods of detecting or measuring these differences. A knowledge of the cause of such differences is also of value in dealing with many practical problems in either line of work. (PsycINFO Database Record (c) 2005 APA, all rights reserved).