A classic text is back with fresh, comprehensive nursing theories, critiques, and philosophies. Nursing Theorists and Their Work, 9th Edition provides you with an in-depth look at 39 theorists of historical, international, and significant importance. This new edition has been updated with an improved writing style, added case studies, critical thinking activities, and in-depth objective critiques of nursing theories that help bridge the gap between theory and application. In addition, the six levels of abstraction (philosophy, conceptual models, grand theory, theory, middle-range theory, and future of nursing theory) are graphically depicted throughout the book to help you understand the context of the various theories. Each theorist chapter is written by a scholar specializing in that particular theorist's work, often having worked closely with the theorists, to provide the most accurate and complete information possible. A case study at the end of each theorist chapter puts the theory into a larger perspective, demonstrating how it can be applied to practice. Critical Thinking Activities at the end of each theorist chapter help you process the theory presented and apply it to personal and hypothetical practice situations. Diagrams for theories help you visualize and better understand inherently abstract concepts. A Brief Summary in each theorist chapter helps you review for tests and confirm their comprehension. A Major Concepts & Definitions box included in each theorist chapter outlines the theory's most significant ideas and clarifies content-specific vocabulary. Points for Further Study at the end of each chapter directs you to assets available for additional information. Quotes from the theorist make each complex theory more memorable. An extensive bibliography at the conclusion of each theorist chapter outlines numerous primary and secondary sources of information for further study. NEW! Improved writing style and increased use of subheadings make the narrative more concise, direct, and accessible. NEW! Updated research and findings incorporate new content along with more examples and clinical correlations. NEW! History of Nursing Science chapter emphasizes nursing science updates UNIQUE! Graphical depiction of the six levels of abstraction (philosophy, conceptual models, grand theory, theory, middle-range theory, and future of nursing theory) helps you to understand the context of the various theories.