Before considering explanations for hypnotic behavior, we must note that some of us do not exhibit any such behavior at all. People vary in their responsiveness to hypnosis; some seem untouched by it, while others respond dramatically; most lie between the extremes. In research it is common to assess experimental participants, to get a measure of their responsiveness; to do this, hypnotic susceptibility scales are used. These comprise a series of graded suggestions that may or may not produce effects in the person being tested. Psychology is the science most familiar with trying to research the hidden, subjective experience and finding objective handles by which we can gain some grasp of what is going on. In the clinical field it is often considered a waste of valuable time to carry out a test on someone who is to be treated anyway, whether of high or low susceptibility.
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