Student volunteers who scored 9 (N = 20), 10 (N = 19), 11 (N = 26), and 12 (N = 15) on a live-administered Harvard Group Scale of Hypnotic Susceptibility (HGSHS:A) of Shor and E. Orne (1962) were retested with the individually administered Stanford Hypnotic Susceptibility Scale (SHSS:C) of Weitzenhoffer and Hilgard (1962). There appeared to be a break in HGSHS:A's predictive ability at 11 suggestions passed. Whereas a majority of Ss who passed at least 11 HGSHS:A suggestions retested in SHSS:C "virtuoso" range (i.e., passed at least 11 suggestions), a relatively small percentage of Ss who passed fewer than 11 HGSHS:A suggestions retested as SHSS:C virtuosos. These results are generally consistent with previous research (Register & Kihlstrom, 1986) using a standard taped-recorded HGSHS:A induction.
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Green et al. (1992) studied this question.
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