Bolton-Brush Growth Study Center

The Bolton-Brush Growth Study comprises the world's most extensive source of longitudinal human growth data. The Brush Inquiry was initiated in 1926 as an effort by Prof. T. Wingate Todd and his associates to examine normal human mental and physical growth and development. The Bolton Study was initiated in 1929 by B. Holly Broadbent, Sr. It concentrated on growth and development of the face and teeth. The radiograph was the primary tool used by these researchers to study the physical changes that occurred in the bones of the body with time. Over the years radiographs were taken of the same individuals on an annual basis for the purpose of determining how the body grows. Radiographic data was supplemented by handwritten notes regarding nutritional, dental and medical health status and disease history. Batteries of psychological and mental tests were also given yearly. Today, under the direction of Dr. B. Holly Broadbent, Jr., the Brush Inquiry and the Bolton Study collections combine to form the Bolton-Brush Growth Study.

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