Within the last year a number of requests have been received in the Iowa Child Welfare Research Station for averages of physical measurements of young children. In order to meet the demand, tables have been prepared of the means, standard deviations, probable errors and coefficients of variation, in metric units, of the measurements of 150 boys and 167 girls from 3 to 6 years of age who have been enrolled in the preschool psychological laboratories of the station from September, 1922, to April, 1928. These tables are part of a comprehensive study of physical growth, in progress at the station.
The children measured were in good health; the majority belong to the rather favoring social environment provided by parents of the professional and merchant classes.
The measurements, obtained monthly on the date corresponding to the child's birthday, were made by trained workers under the direction of Dr. Bird T. Baldwin;
IOWA CHILD WELFARE RESEARCH STATION. PHYSICAL TRAITS OF YOUNG CHILDREN: REPORT OF MEASUREMENTS OF ONE HUNDRED AND FIFTY BOYS AND ONE HUNDRED AND SIXTY-SEVEN GIRLS FROM THREE TO SIX YEARS OF AGE. Am J Dis Child. 1929;38(3):541–546. doi:10.1001/archpedi.1929.01930090093011
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