hypnosis as a research tool

n. The use of suggestive trances to investigate psychological and other variables including hypnosis itself. Subjects in suggestive trances often experience changes in perception, memory, thoughts, feelings, and behavior which may persist after the trance ends and have been found to be related to many nontrance behaviors. For example, it has been found that people in a hypnotic trance are more likely to report information from memory which may be either true or false than are people who have not been hypnotized; thus testimony from people who have been hypnotized is often inadmissible as evidence in courts in the United States and some other countries.