Many schools of psychotherapy have been derived from the seminal work of Milton H Erickson M.D., including strategic therapy, interactional therapy, NLP and solution focused therapy. In some approaches hypnosis is central; in other approaches hypnosis is more peripheral. This class features two experts personally trained by Dr. Erickson, each of whom approach psychotherapy from somewhat different perspectives. In his approach, Possibility Therapy, Bill O'Hanlon epitomizes the strengths of a solution focused orientation. In his experiential approach, Jeffrey Zeig shades treatment in the direction of developing dramatic reference experiences.