Test-Retest Reliability of the Stanford Hypnotic Susceptibility Scale, Form C and the Elkins Hypnotizability Scale
This project aimed to assess the consistency of hypnotizability over time when measured by theStanford Hypnotic Susceptibility Scale: Form C (SHSS:C) and the Elkins Hypnotizability Scale(EHS), and to contrast score distribution and pleasantness of these scales. University studentswere either administered the SHSS:C or the EHS twice with one week delay by separateexperimenters. Test-retest reliability of the EHS and the SHSS:C was ρ = .82 [.71-.92] and ρ=.66, 95% [.47-.86] respectively. Hypnotizability was comparable at test and retest in the EHSgroup, SHSS:C scores decreased by the retest. We found that the SHSS:C produced higherscores than the EHS, and the pleasantness of the two scales was comparable. Overall our resultssupported the reliability of the EHS, while SHSS:C scores were more inconsistent over time.More research is warranted.