Abstract
It was hypothesized that previous acquaintance with the hypnotist would increase subjects' hypnotic susceptibility scores. Two matched groups were given the Harvard Group Scale of Hypnotic Susceptibility, using a tape-recorded induction procedure. One group knew the recorded hypnotist as their classroom instructor, while the other was unfamiliar with him. Even when possibly resistant subjects were eliminated from the results for the second group, the group which knew the hypnotist had higher hypnotic susceptibility scores at between the .001 and .002 levels of significance.