REFERENCES
- Kazdin , A. E. 1986 . “ Behavior modification in applied settings (Rev. ed.). ” . Homewood, IL : Dorsey .
- Matson , J. L. and Taras , M. 1989 . A 20 year review of punishment procedures and alternative methods to treat problem behaviors in developmentally delayed persons. . Developmental Disabilities , 10 : 85 – 104 .