The effects of hypnotic susceptibility on reducing smoking behavior treated by an hypnotic technique.

This study sought to obtain empirical data on the issue of whether susceptibility to hypnosis influences the outcome of an hypnotic therapy. At the first of two sessions, Ss had their susceptibility evaluated unobtrusively. At the second session, they learned Spiegel's self-hypnotic method to stop smoking. At the end of 3 months' follow-up 7 of 54 volunteers were completely abstinent (13%), while 31% had reduced smoking by 50% or more. Of the 7 totally abstaining Ss, 1 was high, 1 was low and 5 were medium susceptible, which is not unlike the distribution of hypnotic susceptibility in the general population. However, it was found that significantly more Ss of higher susceptibility reduced by 50% or more than did less susceptible Ss.