This resource illuminates the daunting task of understanding and applying philosophies, theories, models, and taxonomies in nursing practice and research at the master’s or doctoral level. Distinguished by a unique organizational structure, the text is divided into two broad areas of practice/focus: individuals and families (Part II) and communities, populations, and systems (Part III). The frameworks in each area are organized conceptually into 17 chapters, many of which are interdisciplinary, thus not commonly found in nursing theory texts. This unique organizational structure enables readers to acquire both a broad overview of frameworks useful in nursing practice and research, and to focus on frameworks relevant to specific practice areas and concepts of interest.