Imagery vividness before and during the PCI-HAP: a partial replication

This study sought to replicate an earlier study wherein imagery vividness before and during a phenomenological hypnotic assessment procedure was assessed, while also measuring trance (hypnoidal) state effects and several other variables. Correlational and regression analyses for that study suggested that imagery vividness during hypnotism was predicted by combined imagery vividness before hypnotism and trance (altered) state effects during hypnotism. The present study procured a larger sample employing a similar design and a similar subject pool. With the current study, although trance state effects and imagery vividness before hypnotism still significantly predicted hypnotic imagoic suggestibility (imagery during hypnotism), the variance accounted for was appreciably less. The meaning of these results as a function of the methodology used is discussed.