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This pamphlet is a statistical study of various measurements taken on children from the age of 3 to 18 in a group of mixed Welsh and English ancestry. More than 1,200 children were studied and the unique thing about the author's work is that observations were made on successive years on the same children, whereas most statistical studies have not followed the various children throughout the growth period. The author confirms the observations that growth occurs in at least two major spurts and the well known fact that girls exceed boys in size in the early adolescent period. The statistical analysis also covers pigmentation of the skin, eye color and forehead shape and discusses various physical, physiologic and psychologic characteristics.
A Study of Growth and Development: Observations in Successive Years on the Same Children. JAMA. 1934;103(9):706. doi:10.1001/jama.1934.02750350070032