1932
DOI: 10.1111/j.2044-8295.1932.tb00647.x
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INTELLIGENCE AND FERTILITY1

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Cited by 4 publications
(3 citation statements)
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“…The corresponding means are 3 for families and 3.67 for children. The latter is the contraharmonic mean discussed by Jaspen (44,45) and bears a direct arithmetic relation to the former. If X represents number of children in each family and N represents number of families, the mean per family is ~2X/N and the mean per child is ~SiX 2 /1/X.…”
Section: Methodological Problemsmentioning
confidence: 83%
“…The corresponding means are 3 for families and 3.67 for children. The latter is the contraharmonic mean discussed by Jaspen (44,45) and bears a direct arithmetic relation to the former. If X represents number of children in each family and N represents number of families, the mean per family is ~2X/N and the mean per child is ~SiX 2 /1/X.…”
Section: Methodological Problemsmentioning
confidence: 83%
“…Several large-scale American and British investigations conducted during the first five decades of the twentieth century revealed a rising intellectual level of the general population as measured by intelligence tests (see Anastasi, 1958a, pp. 2®9-211). These findings contradicted the intellectual decline predicted by several psychologists, geneticists, and demographers (e.g., Brad-ford, 1925 ; Burt, 1946;Cattell, 1937;Dawson, 1932). The anticipated decline was based on the widely reported negative correlation between intelligence and family size.…”
Section: Population Changes Is Test Performancementioning
confidence: 63%
“…Testing relatively large unselected groups of school children Bradford, 11 Chapman and Wiggins, 11 Lentz, 9 Cattell, 7 Fraser Roberts, Norman, and Griffiths, 7 Moshinsky, 10 and Burt, 28 have obtained correlations from -.19 to -.33 between intelligence and number of children in the family. In certain instances where special groups were tested, as the gifted by Terman 18 and those from a slum clearance area by Dawson,4 the obtained correlations were within this range. However lower negative correlations were generally obtained with the highly selected groups, such as the coal miners' children (Sutherland 12 ), special groups of private, preparatory, and secondary fee-paying children (Fraser Roberts et al, 1 Moshinsky 10 ), and college students (Himmelweit 8 ).…”
Section: Introductionmentioning
confidence: 65%