Twelve years after his comprehensive book on dementia praecox, Bellak fulfilled his promise of publishing a sequel to that first volume. Despite his indefatigable energies, the ever-widening scope of the subject, together with the pressure of his own work, compelled him this time to enlist the assistance of a group of competent co-workers. Indeed, it is axiomatic that no investigator of schizophrenia can consider himself to be competent in all aspects of the problem.

This volume represents an excellent review of the schizophrenic syndrome. The latter conceptualization is preferred in keeping with the present state of our knowledge, which has taken us far from the original monolithic conception. Contributors survey specific aspects of the problem, such as the statistical, pathological, diagnostic and symptomatic, physiological, psychoanalytic, experimental psychological, and sociocultural. They also discuss the existing