Areas of Interest

Behavioral pharmacology of mental retardation: Behavioral selectivity of psychoactive
medications--drug effects on cognitive and aberrant behaviors

Environmental and physiological causes/determinants of aberrant behavior in mental retardation

Stimulus control, attention, and categorization in humans

Continuous dimensions of operant behavior

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Funded Projects

Laboratory Models of Maladaptive Escape Behaviors

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Representative Publications and Presentations

O'Donnell, J., Crosbie, J., Williams, D. C., & Saunders, K. J. (in press). Stimulus control and generalization of response-cost punishment with humans. Journal of the Experimental Analysis of Behavior.

Saunders, K. J., & Williams, D. C. (1998). Stimulus-control procedures. In K. A. Lattal & M. Perone (Eds.), Handbook of research methods in human operant behavior (pp. 193-228). New York: Plenum.

Williams, D. C., Dube, W. V., Johnston, M. D., & Saunders, K. J. (1998). Conditional vs. trial-unique delayed matching to sample. American Journal on Mental Retardation, 103, 186-192.

Williams, D. C., & Saunders, K. J. (1997). Methodological issues in the study of drug effects on cognitive skills in mental retardation. In N. W. Bray (Ed), International review of research in mental retardation (Vol. 21, pp. 147-185). New York: Academic Press.

Williams, D. C., & Johnston, J. M. (1992). Incorporating continuous response and stimulus dimensional quantities in schedule contingencies. The Journal of the Experimental Analysis of Behavior, 58, 205-227.

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Recent Awards and Service

Board of Editors, The Journal of the Experimental Analysis of Behavior

Guest Reviewer, American Journal on Mental Retardation

Guest Reviewer, The Journal of Applied Behavior Analysis