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This is a careful, thorough technical analysis of growth changes in height and weight, strength, pulse rate, blood pressure, muscle coordination, and various intellectual processes, over a period of five years in a group of children aged from 2 to 11, pupils in the Nursery School and the City and Country School, New York City. Both these schools are used as laboratories in experimental education by the Bureau of Educational Experiments. The studies indicate especially the importance of studying the rate of physical and mental growth as contrasted with relatively static test norms. Certain children, moreover, with a normal rate of growth vary markedly from standards heretofore accepted as accurate. As the result of fluctuations in growth in weight, the weight-height index shows less correlation with age than height alone. There is a decreasing pulse rate in relation to age rather than to increased weight-height relationship. Performances involving little muscular
Mental Growth of Children in Relation to Rate of Growth in Bodily Development. A Report of the Bureau of Educational Experiments, New York City. JAMA. 1925;84(25):1944. doi:10.1001/jama.1925.02660510060036
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