Structural aspects of three hypnotizability scales: smallest space analysis

Smallest space analysis (SSA) was used to examine structural aspects of the Creative Imagination Scale (CIS), Harvard Group Scale of Hypnotic Susceptibility, Form:A (HGSHS:A), and Stanford Scale of Hypnotic Susceptibility, Form C (SHSS:C). Correlation matrices for each of the instruments came from published studies of other investigators. The SSA on the CIS suggested the presence of 1 facet, focus of processing, with 2 subsets of items: somato-sensory and imagination sensory. The combined 22-item matrix SSA showed that the CIS and HGSHS:A items regionalized separately. The item configuration suggested 1 facet, nature of suggestions including 3 subsets: direct motor items of the HGSHS:A, challenge-inhibition items of the HGSHS:A, and the cognitive items of the CIS. The SSA for the SHSS:C suggested 2 facets, containing 2 elements each: processing focus of suggestions (cognitive-sensory and motor-sensory) and nature of suggestions (direct and challenge-inhibition). A general mapping sentence is offered with possible implications.