Sterilization for human betterment : a summary of results of 6,000 operations in California, 1909-1929 / by E.S. Gosney ... and Paul Popenoe.

  • Gosney, E. S. (Ezra Seymour), 1855-1942.
Date:
1929
Catalogue details

Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: Sterilization for human betterment : a summary of results of 6,000 operations in California, 1909-1929 / by E.S. Gosney ... and Paul Popenoe. Source: Wellcome Collection.

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    STERILIZATION FOR HUMAN BETTERMENT and an I. Q. of 50. The twelve-year-old who is mentally on a level with the nine-year-olds has an I. Q. of 75. The child who is up to the stand¬ ard of his age is normal, with an I. Q. of 100, while the superior child of eight may be doing the work of a ten- or twelve-year-old, and have an I. Q. of 125 or 150, as the case may be. For adults, four¬ teen or sixteen is usually taken as the age beyond which there is no development of the inborn intel¬ lect, and adult-intelligence quotients are figured on that base. The tests expressed in the I. Q. relate, for the most part, only to abstract or verbal intelligence. There are other types of intelligence that may be just as useful, or more so, to the child in getting along pleasantly in the world and mak¬ ing a living; for instance, mechanical intelligence and social intelligence. But since educational progress and racial progress both depend largely on the more abstract type of intelligence that fig¬ ures in the I. Q., it is not altogether wrong that this should be made the basis for the conventional determination of feeble-mindedness. From this point of view, any one with an I. Q. of less than 70 has sometimes been called feeble¬ minded. He has less than three-fourths of the average amount of intellect, and while he may get along, usually does get along, passably if he is emotionally stable, if his problems are not too [8]