Items for assessing posthypnotic recognition amnesia with the HGSHS:A and the SHSS:C

A procedure for assessing posthypnotic recognition amnesia is described. A set of items for the Harvard Group Scale of Hypnotic Susceptibility, Form A and for the Stanford Hypnotic Susceptibility Scale, Form C were developed and analyzed for reliability and their ability to discriminate individuals who demonstrate posthypnotic amnesia. Recognition amnesia could be assessed as reliably as recall amnesia, and posthypnotic recognition amnesia identified a select subgroup of high hypnotizable individuals who had higher scores on the screening scales. These items may prove useful for assessing posthypnotic recognition amnesia in conjunction with widely used scales of hypnotic susceptibility.