Abstract
Over the last several decades single session psychotherapy has become a mainstream psychotherapeutic approach. A steadily increasing demand for psychotherapeutic services and a continuous reduction in mental health care resources worldwide are both largely responsible for this development. This paper describes single session psychotherapy and provides a brief review of the relevant literature. Single session psychotherapy delivered in walk-in settings is also discussed. Therapists who are unfamiliar with single session psychotherapy will find that this paper provides a concise introduction to the essential processes and outcomes of this psychotherapeutic approach.