A.M.L. Rodrigo, M.M.P. Pineiro, P.C.M. Suarez, M.I. Caro, and S.L. Giraldez, Psychology in Spain, 1997, 1, 1, 10–16.
Abstract: The present study was designed to gather data related to the continuum hypothesis of hallucinations. According to this hypothesis, hallucinations can be considered to be one end of a continuum of normal conscious experience that include vivid imagery, daydreams, and thoughts. Subjects were 222 college students who anonymously completed the Hallucination Questionnaire (Barrett and Etheridge, 1994), the Betts QMI Vividness of Imagery Scale (Richardson, 1969), and Millon’s Clinical Multiaxial Inventory (MCMI-II) (Millon, 1983). The results suggest that hallucinators have more vivid imagery and higher scores on most Millon’s Inventory scales compared to non-hallucinators. Nevertheless, a normal distribution of the hallucinatory experiences was not found, which casts doubt on their dimensional nature.