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Published Online: April 1948

THE CEILING EFFECT OF GLUTAMIC ACID UPON INTELLIGENCE IN CHILDREN AND IN ADOLESCENTS

FREDERIC T. ZIMMERMAN, BESSIE B. BURGEMEISTER, and TRACY J. PUTNAMAuthors Info & Affiliations

Publication: American Journal of Psychiatry

Volume 104, Number 10

https://doi.org/10.1176/ajp.104.10.593

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Abstract

1. Glutamic acid accelerates mental functioning in human subjects.

2. The acceleration is general and is not restricted to segments of the intelligence and personality of the individual.

3. The greatest improvement in intelligence and performance test scores occurs within the initial 6 months of treatment, after which the acceleration is diminished and appears to be approaching a ceiling after one year of therapy.

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Information & Authors

Information

Published In

American Journal of Psychiatry

Volume 104 • Number 10 • April 1948

Pages: 593 - 599

PubMed: 18913423

History

Published in print: April 1948

Published online: 1 April 2006

Authors

Affiliations

FREDERIC T. ZIMMERMAN

The Department of Neurology, Columbia University, College of Physicians and Surgeons, the Service of Child Neurology, Vanderbilt Clinic and Neurological Institute, and the Department of Psychology, Neurological Institute.

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BESSIE B. BURGEMEISTER

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TRACY J. PUTNAM

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THE CEILING EFFECT OF GLUTAMIC ACID UPON INTELLIGENCE IN CHILDREN AND IN ADOLESCENTS

Abstract

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