[5] She dropped out briefly, due to eye problems, and spent a year traveling in Europe with her aunt[1] before returning to the Normal School and graduating in 1901.

[1] In 1914, Bronner completed her doctoral degree and published her dissertation, entitled A Comparative Study of the Intelligence of Delinquent Girls.

[2][1] Bronner's research showed that there was no correlation between delinquency and mental disability, undermining the common notion of the time that criminal behavior was passed down through biological factors.

[1][2] Healy was equally interested in the study of child delinquency,[5] and subsequently hired Bronner to work as a psychologist at his Chicago Juvenile Psychopathic Institute.

[2] Among other research, she identified that delinquency often arose as a result of placing children with learning disabilities or special abilities in the wrong kinds of educational environments.

[1][5] The Judge Baker Foundation soon became a model for other child guidance clinics across the country, with its co-directors developing important psychiatric practices such as the "team" method, in which psychologists worked together with social workers and physicians to treat a patient.

[5] On November 19, 1930, Bronner and Healy were invited by President Herbert Hoover to attend the White House Conference on Child Health and Protection.

[6] During the 1930s, Bronner also worked briefly in New Haven, Connecticut, as Director of the short-lived Research Institute of Human Relations at Yale University.

[5] In collaboration with Healy, Bronner published multiple books on juvenile psychology, including Reconstructing behavior in youth: A study of problem children in foster families (1929), Treatment and what happened afterward (1939), and What makes a child delinquent?

[1] According to biographer John C. Burnham, marriage changed very little about their professional relationship, its only effects being the easier facilitation of their working together on evenings and weekends and "complicating administration of the clinic" whenever the couple went on vacation together.

[5] A shortage of staff during World War II prolonged Bronner and Healy's work at the Judge Baker Foundation, despite retirement plans.

[5] After the couple finally retired in 1946, Bronner destroyed most of her own personal research and unpublished papers, preferring to keep the public's focus on her husband's academic work.