“…Hence, the design of the educational environment must provide for more than preventing disruptive behaviors, it must also have systems for increasing prosocial behaviors (Winett & Winker, 1972). In regard to these concerns, a few researchers have used interdependent group contingencies to increase social skills (e.g., Winett, Battersby, & Edwards, 1975), increase appropriate classroom behavior (Babyak et al, 2000;Greenwood, Hops, Delquadri, & Guild, 1974;Koch & Breyer, 1974), and increase students' reports of their peers prosocial behaviors (Cashwell et al, 2001;Skinner, Cashwell, & Skinner, 2000).…”