Abstract
A distinction is made between desensitization techniques carried out in vivo and other modes of desensitization therapy (flooding, implosion, and systematic desensitization) which rely upon mental operations or processes. Research is reviewed and points are discussed which support a position supporting a relationship between variables and phenomena found in the desensitization therapies and those found in hypnosis. This relationship appears to be greatest in those desensitization therapies basing treatment upon the utilization of mental operations. Some new lines of research are then proposed.