First used by Irish-American psychoanalytic psychiatrist Harry Stack Sullivan in the 1940s, Parataxical Integration (a combination of terms) refers to the mutual condition of parataxic distortions (another concept of Sullivan’s). Parataxical integration exists when two people, usually intimate with each other (i.e. parents and children, spouses, romantic partners, business associates), are reciprocally reactive to each other’s seductions, judgmental inaccuracies, hostile comments, and manipulations or other "triggering" behaviors. One says or does something causing the other to react, setting off a cyclical "ping-pong", "tit-for-tat", "you-get-me-and-I-get-you-back" oscillation of verbal and/or behavioral reactions.