 This might explain why interrogation, military training, and cult-recruitment practices prefer to deprive their new recruits of sleep.Covert hypnosis is a phenomenon not too different from indirect hypnosis, as derived from Milton H. Erickson and popularized as "The Milton Model" in style,
but the defining feature is that the hypnotized individual subsequently engages in hypnotic phenomena without conscious effort or choice.Covert hypnosis, like "Ericksonian Hypnosis", "operates through covert and subtle means... to reach deeper levels of consciousness than are touched by the surface structure of language".