Four decades of group hypnosis scales: what does item-response theory tell us about what we've been measuring?

@article{Sadler2004FourDO,
  title={Four decades of group hypnosis scales: what does item-response theory tell us about what we've been measuring?},
  author={Pamela Sadler and Erik Z. Woody},
  journal={The International journal of clinical and experimental hypnosis},
  year={2004},
  volume={52 2},
  pages={
          132-58
        }
}
To overcome problems with previous psychometric approaches to hypnosis scales, the authors applied full-information factor analysis, based on multidimensional item-response theory (IRT), to a 39-year sample of 11,517 records of the Harvard Group Scale of Hypnotic Susceptibility, Form A (HGSHS:A). They also performed a comparable analysis on the standardization sample of the Waterloo-Stanford Group C Scale (WSGC). The HGSHS:A emerges as two-factored, whereas the WSGC more closely approaches… CONTINUE READING

Citations

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