From pioneering scientist-practitioners, this book offers the first comprehensive guide to using the groundbreaking Alternative Model for Personality Disorders (AMPD) in clinical practice. The authors explain how the AMPD weaves together evidence-based assessment of personality functioning and traits to provide a dimensional understanding of the client's needs, strengths, and level of impairment. Vivid case examples illustrate applications in clinical assessment, client feedback, diagnosis, treatment planning, and personalized intervention. The book's final section describes ways to apply the AMPD with specific patterns of personality disorder and with other mental health issues, such as complex trauma and impulse-control problems.