The most comprehensive and thoroughly researched text available on this topic, underscores the notion that group work is improved through increased collaboration between researchers and practitioners. Edited by renowned leaders in the field, this thoroughly updated and revised explores current literature and research and offers suggestions for practice in psycho-educational, counseling, and therapy groups. The Handbook is divided into five main sections: current and historical perspectives, best practices, multicultural and diverse groups, groups in special settings, and an introduction to special topics.