The separated theories reflect how psychoanalysis is now frequently taught, with trainees often exposed to these valid and differing emphases, terminologies, and techniques. For many years, “mainstream” psychoanalysis was “ego psychology,” based on Freud's structural theory, but it is now referred to as “classical” and presented in this book as one school of thought. This certainly is taught significantly in many institutes, but this new edition of the textbook shows the general manner of its de-emphasis (for example, Jay Greenberg's essay titled “Psychoanalysis in North America After Freud”). The diverse aspect of contemporary psychoanalysis is highly exciting, promising, and, at times, confusing, particularly for beginners. This volume helps us to sort out the history, politics, varieties, and rationales of differing approaches.