“…Numerous investigators have reported increases or decreases in the frequency of a target behavior (R) when the reinforcement frequency for some other behavior (re) changed in the opposite direction. For example, Ayllon, Layman, and Kandel (1975), Ayllon and Roberts (1974), Kirby andShields (1972), Marholin andSteinman (1977), and Winett and Roach (1973) found that the rate of disruptive behavior (R) decreased when reinforcement was arranged for academic behavior (re), just as Equation 3 requires. Similarly, Brawley, Harris, Allen, Fleming, and Peterson (1969) and Lovaas, Litrownik, and Mann (1971) found that the frequency of self-stimulatory behavior decreased when appropriate behavior was reinforced.…”