RESUMO
Attitudes and beliefs toward hypnosis are relevant in promoting hypnotic responses, in predicting the efficacy of interventions that include hypnosis, and in reducing iatrogenic effects in hypnotized individuals. The goal of the present study is to test the impact of previous knowledge about hypnosis and past experiences being hypnotized on attitudes and beliefs about hypnosis. A sample of 1,977 Portuguese students participated in the study; they responded to the Valencia Scale of Attitudes and Beliefs Toward Hypnosis-Client Version (VSABH-C) on two different occasions (test-retest method). Significant differences were found (p ≤ 0.001) on participants' attitudes and beliefs about hypnosis depending on the source of knowledge about hypnosis. Results also showed significant differences (p ≤ 0.001) in the multivariate profile analysis of the scale's factors based on whether participants had a previous history of hypnosis and depending on who hypnotized them. Participants who reported no previous knowledge about hypnosis or who acquired their knowledge from nonscientific sources scored significantly higher in the negative factors (fear, memory, magical, and marginal), therefore reporting more negative beliefs. Likewise, these participants scored lower in the positive factors (help, control, collaboration, and interest). Participants who had been previously hypnotized showed higher scores in the positive factors. In addition, when hypnosis had been utilized by a psychologist, these scores were even higher. However, some participants who had been previously hypnotized scored high in some of the negative factors (memory and magical), which indicates that some professionals using hypnosis are fostering some misconceptions about hypnosis.
