Abstract: Primary representational system. Using similar language structures while interacting is thought to increase rapport and influence. This study tested that assumption. Thirty subjects were exposed to three different hypnotic inductions varying in sensory language structure according to major representational systems. Subjects were evaluated by EMG for relaxation obtained from compatible and non compatible inductions. Subjects objectively obtained greatest relaxation when experiencing hypnotic inductions containing predicates corresponding to their PRS (p< .05). Matching PRS predicates increases the relaxation level of subjects exposed to matching and nonmatching hypnotic inductions. Identifying and matching PRS language structures appears to enhance rapport andinfluence. Subjects relaxed second most with their secondary representational system (RS) and least with their tertiar RS.