The clinical interview is the foundation for all aspects of the practice of psychology. It is the primary mechanism by which psychological services are formulated and delivered. While most novice therapists believe the purpose of the clinical interview is exclusively for diagnosing, it is much more encompassing than mere classification of symptoms. The interview is the initial contact between therapist and client and sets the tone for many facets of therapist-client interaction. It is this early contact that will dictate the quality of the therapist-client relationship including the level of patient commitment to evaluation and treatment.