Twenty years is a long time in the life of a science. While the historical roots of psychology have not changed since the first edition of this book, some of the offshoots of the various theories and systems discussed have been crit ically reexamined and have undergone far-reaching modifications. New and bold research has led to a broadening of perspectives, and recent devel opments in several areas required a considerable amount of rewriting. I have been fortunate in the last fifteen years to have worked with about 2,000 psychologists and other behavioral scientists who contributed to several collected volumes I have edited. As the editor-in-chief of the In ternational Encyclopedia of Psychiatry, Psychology, Psychoanalysis and Neurol ogy, I have had the privilege of reading, scrutinizing, and editing the work of 1,500 experts in psychology and related disciplines. In addition, I have written several books and monographs and over one hundred scientific papers. Armed with all that experience, I have carefully examined the pages of the first edition. Chapter 8 required substantial rewriting and several new sections have been added to other chapters: "Current Soviet Psychol ogy" (Chapter 2, Section 7); "New Ideas on Purposivism" (Chapter 5, Sec tion 4); "Recent Developments in the Sociological School of Psychoanalysis" (Chapter 9, Section 4); and "Present Status of Gestalt Psychology" (Chapter 12, Section 4). Chapter 15 was omitted, and two new chapters were added: Chapter 14 ("Humanistic Psychology") and Chapter 16 ("Selected Research Areas").

Concern about psychology’s fragmentation is not new, but there has for the past decade been increasing calls for psychologists to acknowledge to the costs associated with fragmentation and to search for ways to unify the discipline. A New Unified Theory of Psychology introduces a new system that addresses psychology’s current theoretical and philosophical difficulties. The new theory consists of four interlocking pieces that together provide—for the first time—a macro-level view that clarifies the nature of psychology’s problems and offers a clear way to unify the various elements of the field. The unified theory provides the field of psychology with a well-defined subject matter, allowing both academic and professional psychologists will be able to develop a shared language and conceptual foundation.

Book dealing with psychological theories

Providing a comprehensive exploration of the major developments of social psychological theories that have taken place over the past half century, this innovative two-volume handbook is a state of the art overview of the primary theories and models that have been developed in this vast and fascinating field. Authored by leading international experts, each chapter represents a personal and historical narrative of the theory′s development including the inspirations, critical junctures, and problem-solving efforts that effected theoretical choices and determined the theory′s impact and its evolution. Unique to this handbook, these narratives provide a rich background for understanding how theories are created, nurtured, and shaped over time, and examining their unique contribution to the field as a whole. To examine its societal impact, each theory is evaluated in terms of its applicability to better understanding and solving critical social issues and problems.

Theories of School Psychology: Critical Perspectives describes the theories, frameworks, and conceptual models that underlie the science and practice of school psychology. Chapters provide an orientation to theories, frameworks, and conceptual models that address core school psychology domains along with application to common student, school, and system issues prevalent in the field. Promoting a deeper study of the fundamental processes and approaches in school psychology, this book advances the embedding of theories, frameworks, and models into the design and delivery of educational and psychological services for children, youth, families, and schools. Case vignettes, empirical evidence, and a broad emphasis on prevention and implementation science provide students and trainers with important information for problem-solving in research and in the field.