I's maternal grandmother was born in Oklahoma, her ancestry being French-Huguenot, Welsh, and Irish. In education she lacked a half year of completing the work for her B.A. in the University of New Mexico. After her marriage she devoted herself to her home and family. She was talented in dramatics and was active in local church, club, and lodge affairs. _Father_. I's father was born March 21, 1909, in South Dakota. He is mainly of English descent. He has the degree of B.A. and also of M.A. from Stanford University, and he was a candidate for the degree of Ph.D. in Public Law in an Eastern university at the time of this inquiry. He was for eight years a college instructor, and later was connected with a government department at Washington, D. C. He has been active in his profession, has written in the field of government, and is a member of various academic societies. He was one of the 1000 children described by Terman in _Genetic Studies [of] Genius_. He has been self-supporting since the age of 19. _Mother_. I's mother was graduated from high school in New Mexico and attended the University of Kansas for one year. She then transferred to the University of New Mexico, receiving her B.A. degree in 1930. Two years before (1928), when she was 20 years old, she married I's father, and continued her college course. After graduation she managed her home and also took some graduate courses. In high school she was class poet and in the Honor Society four years. In her college years she was active in sorority life and on publications. Her major interests were debating, dramatics, and student government. At the University of Kansas she was on the Dean's Honor Roll (1925-1926). At New Mexico she held various scholastic offices and was awarded several honors. In more recent years I's mother has taken an active part in the League of Women Voters and in the Faculty Wives' Club in the college where her husband has been teaching. PRESCHOOL HISTORY The following data have been supplied by Child I's parents, who kept a baby-book record of her development: Length of pregnancy, 8.5 months. Weight at birth, 8 pounds. Breast fed to 2.5 months, then bottle fed to 18 months. First teeth appeared at 5 months and first permanent teeth at 5 years. Walked alone (several steps) at 10.5 months. Talked in short sentences at from 18 months to 2 years. Childhood illnesses--measles, whooping cough, mumps, chicken pox, colds. EARLY EDUCATIONAL HISTORY At the age of about 2 years Child I had been observed in the Institute of Child Development (Teachers College, Columbia University) and reported as being hyperactive and of high intelligence. At the age of 3 or 4 years she was used as a demonstration case before a class in psychology in the University and the Mental Age of 7 was assigned to her at that time.