This was a founding work for other scientists in the field of craniometry. One criticism has been against the early research such as craniometry. Gliddon was influenced by Samuel George Morton's craniometry and polygenist theory of human origins. His research at Gebel Ramlah includes craniometry and dental morphology. Craniometry, the measurement of the cranium (skull), is a large subset of cephalometry. In 1918, she was named Crewdson Benington research student in craniometry, working under Professor Pearson.