The aim of this study is to examine whether a lecture on hypnosis can modify attitudes and misconceptions about hypnosis. The sample consisted of 97 health professionals from institutions of Havana City. Group 1 consisted of 46 participants who received a lecture on hypnosis. Group 2 consisted of 51 participants who received a lecture about Urology. The Valencia Scale of Attitudes and Beliefs toward Hypnosis<br>Therapist was applied before and after the lecture. Results indicated that there were significant differences between the groups in which Group 1 showed more positive attitudes toward hypnosis. However, both groups showed similar misconceptions about hypnosis and memory, which changed significantly in Group 1 after receiving the lecture about hypnosis, but not in Group 2. Therefore, the lecture about hypnosis had a significant impact in correcting participants" misconceptions about memory and hypnosis.