A pseudomemory of having been awakened by some loud noises during a night of the previous week was suggested to 27 highly hypnotizable subjects during hypnosis. Posthypnotically, 13 of them stated that the suggested event had actually occurred. This finding has implications for the investigative use of hypnosis in a legal context.

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Hypnotic dissociation (as indexed by the "hidden observer" method), duality in age regression, and the potential impact of situational cues on these phenomena were examined. A special attempt was made to examine the hidden observer effect in a nondirective fashion. Twelve high and 9 low susceptible subjects were tested in an application of the real-simulating paradigm of hypnosis; 10 highmedium susceptible subjects were employed also. Inquiry into subjects' experiences was conducted through the experiential analysis technique, which involves subjects viewing and commenting on a videotape playback of their hypnotic session. Results demonstrated that neither the hidden observer effect nor duality can be explained solely in terms of the demand characteristics of the test situation. The hidden observer effect was observed in high'Susceptible subjects only; all subjects who displayed the hidden observer effect also displayed duality in age regression. High susceptible subjects were distinctive in their reports of multiple levels of awareness during hypnosis. Findings are discussed in terms of the cognitive skills that subjects bring to hypnosis and the degree to which the hypnotic setting encourages the use of dissociative cognitive processes.

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