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Growth and development charts for boys, Massachusetts, United States, 1985

First published in 1985, these growth and development charts were used to track the physical development of boys aged between one and 19. The boys were repeatedly weighed and measured throughout adolescence. The charts showed potential growth patterns for boys for both ‘late’ and ‘early’ development. This meant individual variations such as growth spurts were incorporated. A study taken over a long period of time is called a longitudinal study. They were developed by James Tanner and Peter S. W. Davies of the Institute for Child Health at the University of London. Tanner is best known for including a child’s physical and social environment into the study of growth (auxology). This practice continues today.

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