Human development - Boys, Girls, Height

Human development - Boys, Girls, Height: The graphs mentioned above also show the height curves from birth to maturity. Up to age two, the child was measured lying on his back. One examiner held his head in contact with a fixed board, and a second person stretched him out to his maximum length and then brought a moving board into contact with his heels. This measurement, called supine length, averages about one centimetre more than the measurement of standing height taken on the same child, hence the break in the line of the curve at age two. This occurs even when, as in the best techniques,
Human development, the process of growth and change that takes place between birth and maturity. The growth and development of a child consists of a highly complex series of changes, with different tissues and different regions of the body maturing at different rates.

PDF) Individual differences in boys' and girls' timing and tempo of puberty: Modeling development with nonlinear growth models

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