This text investigates the classification, etiology, and treatment of psychological disorders through a clinical and research-based framework. The authors, prominent figures in the field of clinical psychology, synthesize decades of empirical research to provide a comprehensive overview of abnormal behavior. The book utilizes a biopsychosocial model to explain how biological, psychological, and sociocultural factors interact to influence mental health outcomes.

This edition is regarded as a standard academic resource for undergraduate students seeking a foundational understanding of clinical psychology. The material is noted for its structured approach to complex diagnostic categories and its reliance on evidence-based research.