Catharine Morris Cox Miles (May 20, 1890 – October 11, 1984) was an American psychologist known for her work on intelligence and genius.
Born in San Jose, CA, to Lydia Shipley Bean and Charles Elwood Cox.
In 1927 married psychologist Walter Richard Miles.
Her sister was classics scholar and Quaker administrator Anna Cox Brinton.She was a professor of clinical psychology at the Yale Medical School and affiliated with Yale's Institute of Human Relations.
Earlier she worked at Stanford with Stanford-Binet creator Lewis Terman in issues related to IQ.
She is also known for her historiometric study (1926) of IQ estimates of three hundred prominent figures who lived prior to IQ testing, a work which was one of the earliest attempts to apply social scientific methods to the study of genius and greatness.