Practical applications of heredity / by Paul Popenoe.

  • Popenoe, Paul, 1888-1979.
Date:
1930
Catalogue details

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

Credit: Practical applications of heredity / by Paul Popenoe. Source: Wellcome Collection.

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    lation of a city if its name was called, and he also made such a record a's the following, when the mere numbers were called: Q. 74,684. A. San Diego, Calif. Q. 83,252. A. Savannah, Ga. Q. 8,481. A. Coshocton, Ohio. The striking thing in K's equipment is not the total number of facts, which is doubtless exceeded by many well-informed persons, but the classification of them, and the fact that they presented no natural associa tions, and thereby taxed his memory the more. He had gone over his facts so often that he could break them up in many peculiar ways, and the performance was well adapted to astonish the natives on a vaude ville circuit. One of the standard intelligence tests measures memory span, that is, the number of digits that can be recalled after a short interval. In general, the average child can do, at the ages stated, the following: age 4 5 6 7 8 9 10 u 12 13 14 15 16 17 Number of digits that can be repeated 4 4 5 5 5 6 6 6 6 7 7 7 7 7