A proven classic in the field, this edition of Psychological Testing and Assessment features new co-author Gary Groth-Marnat. Building on Aiken's strong foundation, this edition has been thoroughly updated, offering extensive coverage of new tests, inventories, and scales, the methods used in constructing these psychometric instruments, and the application of them. Greater integration of chapters, enhanced student activities, more opportunities to increase depth through web-based resources, new editions of various tests, greater emphasis on applied aspects of assessment, and revisions in the content and format of college entrance examinations drive Aiken and Groth-Marnat's twelfth edition. Substantial attention has also been given to neuropsychological assessment, adaptive testing, item response theory, the use of computers in psychological testing, and applications of tests in various contexts.This is an essential text for any student who is planning to construct, administer, and make decisions based on psychological tests in clinical, educational, or vocational settings.Features a balance of theory and practice and more extensive coverage of clinical tests and tests used in vocational, educational, and forensic settings. Includes the following pedagogical aids in each chapter: chapter objectives, summary, and mastering the chapter objectives, all of which are clearly linked to enhance access to the material and maximize ease of learning. Contains case studies to increase human interest and application of material (in many of the chapters). Provides recommended activities at the end of each chapter-all designed to enable students to experience the field of psychological assessment through various activities. Helps students study and review elementary statistics for psychological and educational testing (Appendix A).