“…Although many have thought that hypnotic susceptibility was a set character trait, there are a number of studies which now seem to indicate that this is not the case, and that responsiveness can be increased by certain changes in the hypnotic induction procedure (Pascal and Salzberg, 1959;Sachs and Anderson, 1967;Baykushev, 1969), as well as by means of a pre-induction talk aimed at insuring a positive attitude, an appropriate expectancy and a high motivation toward hypnosis (Dorcus, 1963;Barber, 1969;Barrios, 1969).…”