Expertly designed, the Structured Clinical Interview for the DSM-5 Alternative Model for Personality Disorders (SCID-5-AMPD) is a semistructured diagnostic interview that guides clear assessment of the defining components of personality pathology as presented in the DSM-5 Alternative Model. The paramount tool for the use of SCID-5-AMPD, the User's Guide for the SCID-5-AMPD provides readers with an essential manual to effectively understand and use any SCID-5-AMPD module. Integrating an overview of the DSM-5 Alternative Model, this companion guide provides instructions for every SCID-5-AMPD module and features completed samples of all modules in full, with corresponding sample patient cases and commentary. The modular format of the SCID-5-AMPD allows the researcher or clinician to focus on those aspects of the Alternative Model of most interest. The User's Guide for the SCID-5-AMPD fully explicates each module—available individually or in customized sets: • Module I is devoted to the dimensional assessment of self and interpersonal functioning using the Level of Personality Functioning Scale.• Module II focuses on the dimensional assessment of the five pathological personality trait domains and corresponding 25 trait facets. • Module III is a comprehensive assessment of each of the six specific personality disorders of the DSM-5 Alternative Model, as well as Personality Disorder–Trait-Specified, and includes a global assessment of the level of personality functioning. Trained clinicians with a basic knowledge of the concepts of personality and personality psychopathology will find the SCID-5-AMPD a valuable tool in the assessment and study of personality disorders.