Biological Aspects of Social Problems: A Symposium held by by E. Grebenik (auth.), J. E. Meade C.B., M.A., F.B.A., A. S.
By E. Grebenik (auth.), J. E. Meade C.B., M.A., F.B.A., A. S. Parkes C.B.E, M.A., SC.D., F.R.S. (eds.)
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Extra resources for Biological Aspects of Social Problems: A Symposium held by the Eugenics Society in October 1964
A major obstacle is the difficulty of finding appropriate ways of communicating new ideas and knowledge to the rural masses. Yet another problern is to find suitable means and devices which can be applied in these societies on a large scale, and which are acceptable to the majority of the people. A great deal of research has still to be carried out in these fields. Although the difficulties standing in the way of a rapid fertility decline are great, there are on the other hand some favourable factors to be mentioned.
E. less than 1 cm) in Norway from 1760 POPULATION TRENDS 45 to about 1830; from 1830 to 1875 a gain of around 1! cm, or 0 ·3 cmldecade, took place and from 1875 to 1935 a gainof4 cm, or 0 ·6 cm ldecade. In Holland also records were kept of the height of men called up at nineteen or twenty for the civil militia and remeasured at age twenty-five. ss The fully adult or twenty-five-year-old height actually dropped slightly from 1820 to 1860, but in the hundred years since 1860 is estimated to have risen approximately 9 cm, or 0 ·9 cm 1 decade.
Elementary schools age 7-14, secondary schools 10-18. Distance curves; cross-sectional. (Data from Broman, Dahlberg and Lichtenstein, 1942, Tables 11-14) (from Tanner 67), 42 BIOLOGICAL ASPECTS OF SOCIAL PROBLEMS children measured in 1938, by only two measurers). arger than the children receiving only elementary education, but these differences are completely dwarfed by the secular trend. The difference 1883-1938 is weil established by age seven; the 1938 children are of a size corresponding to about 1!