published in 1966 by Murray Bowen as one of eight parts of Bowen's family systems theory. Murray Bowen, a pioneer in family systems theory, began his early work with schizophrenics at the Menninger Clinic, from 1946 to 1954. Triangulation is the “process whereby a two-party relationship that is experiencing tension will naturally involve third parties to reduce tension”. Simply put, when people find themselves in conflict with another person, they will reach out to a third person. The resulting triangle is more comfortable as it can hold much more tension because the tension is being shifted around three people instead of two. Bowen studied the dyad of the mother and her schizophrenic child while he had them both living in a research unit at the Menninger clinic. Bowen then moved to the National Institute of Mental Health (NIMH), where he resided from 1954 to 1959. At the NIMH Bowen extended his hypothesis to include the father-mother-child triad. Bowen considered differentiation and triangles the crux of his theory, Bowen Family Systems Theory. Bowen intentionally used the word triangle rather than triad. In Bowen Family Systems Theory, the triangle is an essential part of the relationship. Couples left to their own resources oscillate between closeness and distance. Two people having this imbalance often have difficulty resolving it by themselves. To stabilize the relationship, the couple often seek the aid of a third party to help re-establish closeness. A triangle is the smallest possible relationship system that can restore balance in a time of stress. The third person assumes an outside position. In periods of stress, the outside position is the most comfortable and desired position. The inside position is plagued by anxiety, along with its emotional closeness. The outsider serves to preserve the inside couple's relationship. Bowen noted that not all triangles are constructive – some are destructive. Pathological/perverse triangles In 1968, Nathan Ackerman conceptualized a destructive triangle. Ackerman stated “we observe certain constellations of family interactions which we have epitomized as the pattern of family interdependence, roles those of destroyer or persecutor, the victim of the scapegoating attack, and the family healer or the family doctor. Ackerman also recognized the pattern of attack, defense, and counterattack, as shifting roles. Karpman triangle and Eric Berne In 1968, Stephen Karpman, who had an interest in acting and was a member of the Screen Actors Guild, chose "drama triangle" rather than "conflict triangle" as,