Abstract
Abstract Barber's (1969) task-motivational theory was compared to traditional hypnotic state theory using post-hypnotic amnesia as the dependent variable. 33 Ss were selected on the basis of a standard hypnotic susceptibility scale, matched and divided equally between three groups; a hypnotic permissive-motivational, a non-hypnotic permissive-motivational, and a control no-suggestions group. The results were as follows: (a) permissive-motivational suggestions of amnesia appeared to be as effective for non-hypnotic Ss as they were for hypnotic Ss; (b) post-hypnotic amnesia as defined in the study was not produced for any of the three groups; (c) low hypnotic susceptible Ss demonstrated, in some cases, a significant difference in performance on the index of experimentally produced amnesia as compared to higher susceptible Ss. These results were considered as further validation of Barber's (1969) task-motivational theory of hypnosis.
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