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Summary In a longitudinal study, age at menarche for Swedish girls was recorded by school nurses. Some four years after the event the girls were asked to recall the date. The correlation between actual and recalled age at menarche for 339 girls was r =0·81±0·05. 63 per cent of the girls...
Summary A photographic measuring technique has been used to study the lengths of the upper arm and forearm in normal British girls. The data are presented graphically and show: 1.Ellipses which include 97 per cent of normal subjects when upper arm length is plotted against forearm length....
Summary Day-to-day fluctuations in the body weights on five consecutive days of 54 boys and 50 girls aged between 2 and 6 years were measured. The standard deviations of the body weights over this period were of the order of ±0·2 kg in boys and girls. On the basis of these findings, it is...
Summary The demographic correlates of modernization were studied in a municipio of the Guatemalan highlands using, as indicators of modernization, the introduction of chemical fertilizers and of a religious revitalization movement, Accion Catolica . Records, taken from interviews, of 340 women...
Summary Heights and weights were analysed for 636 twins who had been repeatedly measured from birth to 4 years. MZ twins were less concordant for birth weight than DZ twins, principally as a result of a few MZ pairs who exhibited very large differences. By one year of age, however, MZ twins had...
Summary Data from Frisch and Revelle (1971) and Frisch et al. (1973) are used to show that some of their biological conclusions relating body composition to age at menarche follow directly from arithmetical operations on the two observed items of information: weight and height. This emphasizes...
Summary Skin colour data obtained by reflectance spectrophotometry on indigenous populations are compared with environmental variables—latitude, temperature, humidity and altitude. Association with latitude predominates at all wavelengths. Temperatures show a small but appreciable association...
Summary The Dama of South West Africa are a Negroid people living as a reproductive isolate in the desert and semi-desert areas of the north-west of the country. Until recent times a large proportion of them were held in bondage by the Khoikhoi (Hottentot) Nama, while the rest lived as...
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