1. Akande, A. (1993). Improving toilet use (encopresis) in a nine-year-old male through full cleanliness training and token reinforcement. Early Child Development and Care, 86, 123–130.
2. Allen, L. J., Howard, V. F., Sweeney, W. J., & McLaughlin, T. F. (1993). Use of contingency contracting to increase on-task behavior with primary students. Psychological Reports, 72, 905–906.
3. Allen, S.J., & Kramer, J. J. (1990). Modification of personal hygiene and grooming behaviors with contingency contracting: A brief review and case study. Psychology in the Schools, 27, 244–251.
4. American Psychiatric Association. (1994). Diagnostic and statistical manual of mental disorders (4th ed.). Washington, DC: Author.
5. Anderson, J. E., Hedden, C. E., Justice, M. L., & Leslie, L. H. (1994, May). The self-injurious behavior inhibiting system: Further clinical evaluation with assessment of corresponding affective and adaptive functioning. Paper presented at the annual meeting of the Association for Applied Behavior Analysis, Chicago.