Early Mental Traits of Three Hundred Geniuses

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 Ellwood Cox. Catharine Cox earned a PhD from Stanford University and in 1927 married psychologist Walter R. Miles.

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 of IQ estimates of three hundred prominent figures who lived prior to IQ testing.