“…Aversive stimulation (Hall, Axelrod, Foundopoulos, Shellman, Campbell, and Cranston, 1971;Risley, 1968), response cost (Wolf, King, Lachowicz, and Giles, 1970), timeout (Carlson, Arnold, Becker, and Madsen, 1968; Kubany, Weiss, and Sloggett, 1971;Wahler, 1969), group contingencies (Barrish, Saunders, and Wolf, 1969;Harris and Sherman, 1973), and contingency management approaches (Hall, Lund, and Jackson, 1968;O'Leary and Drabman, 1971;Walker and Buckley, 1968) are among the procedures that have been shown to improve the behavior of "hyperactive" and disruptive children. However, these effects have been limited in two areas.…”