The British use of The Barber Suggestibility Scale: Norms, psychometric properties and the effects of the sex of the subject and of the experimenter

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Abstract
The Barber Suggestibility Scale [BSS], as a measure of hypnotic susceptibility, was administered to 130 British undergraduate students by 13 student experiments in a 2 .times. 2 factorial design with the sex of the subject and the sex of the experimenter as the 2 variables. No significant differences among the scores obtained by the 13 experimenters and no significant effect of either the subject''s sex or the experimenter''s sex were found although there was some tendency towards an interaction effect. The distribution of scores from the present sample was similar to the American norms reported by Barber except for slightly lower means on certain test-suggestions. The scale showed satisfactory internal consistency and item-scale correlations. A principal components analysis revealed evidence for a general factor underlying the scale in addition to 3 special factors associated with direct motor, motor challenge and cognitive suggestions which confirms the work of Hilgard on the Stanford scales. The distinction between objective and subjective responses to suggestions is discussed and some improvements are recommended in the scale. The BSS appears to be a simple and reliable measure of hypnotic susceptibility and is suitable for British usage.