Abstract
The effects of d-amphetamine and methylphenidate singly and in combination were compared. While a dose-related increase in activity was observed with both drugs, a combination of the drugs showed only the effect of d-amphetamine.
Article PDF
Similar content being viewed by others
References
Edwards, A. L. Experimental design in psychological research. New York: Holt, Rinehart, & Winston, 1972.
Isaac, W. L., & Isaac, W. Differences in placebo effects. Pharmacology, Biochemistry and Behavior, 1977, 6, 235–236.
Kallman, W. M., & Isaac, W. The effects of age and illumination on the dose-response curves for three stimulants. Psychopharmacologia, 1975, 40, 313–318.
Moore, K. E., Carr, L. A., & Dominic, J. A. Functional significance of amphetamine-induced release of brain catecholamines. In E. Costa & S. Garattini (Eds.), Amphetamine and related compounds. New York: Raven Press, 1970.
Schmitt, H., & Schmitt, H. Interactions between reserpine and amphetamine on blood pressure. In E. Costa & S. Garattini (Eds.), Amphetamine and related compounds. New York: Raven Press, 1970.
Werry, J., & Sprague, R. Hyperactivity. In C. Costello (Ed.), Symptoms of psychopathology. New York: Wiley, 1970.
Author information
Authors and Affiliations
Additional information
This work was supported by Grant MH 25164 from the National Institute of Mental Health.
Rights and permissions
About this article
Cite this article
Isaac, W.L., Isaac, W. Does combining stimulants combine stimulation?. Bull. Psychon. Soc. 12, 475–476 (1978). https://doi.org/10.3758/BF03329741
Received:
Published:
Issue Date:
DOI: https://doi.org/10.3758/BF03329741