[Czechoslovak norms of the Harvard group scale of hypnotic susceptibility, form A]

The author presents Czechoslovak normal of the Harvard group scale of hypnability type A. Two different groups of experimental subjects were examined: 1. a sample of 564 secondary school students aged 14-20 years and 2. a group of 642 people attending a course of hypnosis, doctors and psychologists aged 23-57 years (mean age 31.5 years). The mean score of hypnability in the first group was 5.76 and the standard deviation 2.42. In the second sample the mean score was 4.30 and the standard deviation 2.33. The author presents also the distribution of different levels of hypnability, the order of difficulty of items and reliability of different items. The results of the secondary school students are comparable with data from abroad, the group attending courses on hypnosis differs in some areas. Experience assembled with the Czech translation of the Harvard scale justifies its use.