The growth of growth.

Over a 40-year period, 1940 through the present, human growth research has increased for a minimal to a major part of physical anthropology. Such research, originally conducted at the major American growth centers, has become more diverse and more specialized, extending to National Probability Samplings, nutritional surveys, studies of twins, investigations restricted to the craniofacial complex, and studies of the growth and development of various primate species. Besides extending knowledge of growth and development in general and control mechanisms in particular, there has been major feedback into physical anthropology affording far greater understanding of human variability, ot taxonomic differences, and of changes previously believed to be phylogenetic in nature. To the larger extent, all physical anthropologists have some degree of growth awareness.