With this thoroughly revised twelfth edition, Psychological Testing and Assessment builds on its reputation as the premier text in the field. Lewis Aiken and new co-author Gary Groth-Marnat, a renowned lecturer, practitioner, and researcher, provide extensive coverage of tests used in clinical, organizational, forensic, and educational settings. This comprehensive text includes information on test construction, test application, neuropsychological assessment, the new format for the college entrance exams, adaptive testing, item response theory, and the use of computers in psychological testing. The authors incorporate case studies and experiential activities throughout, encouraging students to think critically about the material in a real-world framework. Greater clarity and expansion of pedagogical features have been made including references to web-based resources, clear chapter objectives, chapter summaries, and review questions. Learning is further enhanced through a companion website that includes practice tests, annotated listing of websites, and guidelines for understanding and evaluating psychological reports. With its well-integrated material and cutting-edge content, Psychological Testing and Assessment is an essential text for students planning to evaluate, administer, interpret, construct, or make decisions based on psychological tests.