Primal Therapy is a form of psychotherapy based on relieving the repressed feelings that result from childhood trauma or abuse by giving vent to the pain through the voice, often by crying and screaming. This allows the trauma, which might have been hidden from others for a lifetime, to be fully experienced, heard, to be exorcised, and then for the person to be supported and cared for, thereby healing the pain on the past, a process of catharsis. Dr Arthur Janov (born 1924), a psychologist and therapist, is the creator of this therapeutic technique and his book which describes his ideas, beliefs and the method of this therapy is titled 'The Primal Scream'. He also his written other books on psychotherapy. He was very influential in the 1970s, especially in California, and had some very high profile clients, such as John Lennon and Yoko Ono.