This groundbreaking text is the most complete and detailed book on the market devoted to middle-range theories and their applications in clinical nursing research. The book thoroughly explains the process of selecting an appropriate theory for a particular nursing research study, sets forth criteria for critiquing theories, and provides a standard format for readers to complete a critique of a theory. Each chapter includes examples of research using middle-range theories and valuable reference lists. Chapter pedagogy includes unit objectives, definitions of key concepts, tables, and relevant Websites.