The effect of amphetamine sulfate upon the intelligence scores of 21 children was noted. Following therapeutic oral doses of 10 mg. and 20 mg. of the drug, performances on the revised Stanford- Binet scale and on a battery of psychomotor tests were not significantly affected. It is suggested that amphetamine sulfate may result in an apparent intellectual improvement in certain situations by its effect on the emotional attitude of the individual toward his task.Abstract Teaser