Evaluation, which promotes a greater understanding of the people occupational therapy serves, is the foundation of occupational therapy practice and provides evidence to guide "best practices." This new edition of the classic text focuses on the role of the occupational therapist as an evaluator with assessment support provided by the occupational therapy assistant. Chapters discuss the various aspects of a comprehensive evaluation, including screening, evaluation, reassessment, and re-evaluation, and reaffirm the importance of understanding people as occupational beings. The expansion of this revision reflects contemporary evaluation approaches. Most importantly, the authors discuss the influence that evaluation practices have on practice and remind readers to think about not only what the current practice environment wants an evaluation to be but also what the profession believes a comprehensive evaluation should be.