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In a foreword Dr. Robert M. Yerkes states, "Mr. Brigham has rendered a notable service to psychology, to sociology, and above all to our law-makers by carefully re-examining and re-presenting with illuminating discussion the data relative to intelligence and nativity first published in the official report of the psychological examining in the United States Army." The greater portion of the book consists of a restatement of the data obtained by tests of the draft army in the World War, together with the statistical treatment of these data. On the basis of his results the author draws comparisons regarding the relative intelligence of the various racial groups represented in the draft. These would appear to corroborate the widespread conviction of the superiority of the Nordic element in our population over the Alpine and Mediterranean elements and over the American negro.
Brigham concludes that American intelligence is declining, and will proceed with
A Study of American Intelligence.. Arch NeurPsych. 1926;16(4):537-538. doi:10.1001/archneurpsyc.1926.02200280145017