SMITHSONIAN INSTITUTION / SCIENCE PHOTO LIBRARY SMITHSONIAN INSTITUTION / SCIENCE PHOTO LIBRARY
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Helen M. Hierholzer, US psychologist. Hierholzer worked at the Catholic University of America. With Harriette E. Linfert, she developed a scale for measuring the mental development of infants during the first year of life. The Linfert-Hierholzer scale was published in 1928.
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