[179] Kornhauser, A. W., "Economic Standing of Parents and the
Intelligence of their Children," _Jour. of Educ. Psychology_, Vol. IX.,
pp. 159-164, March, 1918.
[180] The coefficient of contingency is similar in significance to the
coefficient of correlation, with which readers have already become
familiar. Miss Perrin's study is in _Biometrika_, III (1904), pp.
467-469.
[181] "The Social Waste of Unguided Personal Ability." By Erville B.
Woods, _American Journal of Sociology_, XIX (1913), pp. 358-369.
[182] See also "Eugenics: With Special Reference to Intellect and
Character," by E. L. Thorndike. In _Eugenics: Twelve University
Lectures_, pp. 319-342, New York, 1914.
[183] See U. S. Department of Labor, Children's Bureau Publication, No.
7, "Laws Relating to Mothers' Pensions in the United States, Denmark and
New Zealand," Washington, 1914.
[184] _American Journal of Sociology_, Vol. XX, No. 1, pp. 96-103, July,
1914.
[185] According to Captain (now Lt. Col.) E. B. Vedder of the Medical
Corps, U. S. A., 50% of the Negroes of the class applying for enlistment
in the army are syphilitic. He believes that the amount of infection
among Negro women is about the same. (_Therapeutic Gazette_, May 15,
1916.
Pages:
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750