Danish norms for the harvard group scale of hypnotic susceptibility, form A

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Abstract
Norms for a Danish adaptation of the Harvard Group Scale of Hypnotic Susceptibility, Form A (HGSHS:A) are presented. Four samples tested from 1988 to 1991 (n = 166, n = 54, n = 95, and n = 61) were pooled, resulting in an aggregate sample of 376 participants. The normative data were generally congruent with earlier normative studies with regard to score distribution, item difficulty levels, and reliability. Studies using the Danish adaptation of the HGSHS:A as a screening instrument have shown the predictive value of the instrument in a Danish context. Data for a comparable American sample of volunteers (n = 170) tested by the same hypnotist were included in the analysis. A comparison revealed a marked difference for the posthypnotic suggestion item, hinting that cultural differences between the Danish and American samples with regard to expectancies and attitudes toward hypnosis may play a role. Further studies comparing attitudes toward hypnosis across different cultural contexts are needed to clarify this issue.