MAY 2008, VOLUME 36, NUMBER 2, Abstract 10
Hypnosis and Delusions: Defining the Elusive Second Factor
Michael Connors, Amanda J. Barnier, and Robyn A. Langdon, Macquarie University, Sydney
In 1961, Sutcliffe described the hypnotised person as essentially deluded. Since hypnosis and delusions share many features, researchers have used hypnosis “instrumentally” to create and study delusions in the laboratory. Perhaps the most influential current theory of delusions is Langdon and Coltheart’s two factor model, which posits that both a neuropsychological anomaly (Factor 1) and impairment in belief evaluation (Factor 2) are necessary for delusion to occur. Although there is much support for this model, the exact nature of Factor 2—the factor thought to be common to all or most delusions— remains relatively unspecified. My research seeks to model with hypnosis, and thus clarify, the specific processes involved in delusion, especially Factor 2. In this paper I describe my research project and its current findings, as well as consider possible clinical implications.