Betty Margaret Flint (1920-2008) was born in Toronto but spent the last part of her life in Ajax. She attended the University of Toronto and earned a B.A. in 1944, a Diploma in Child Study in 1945, and a M.A. in 1948. Her professional career was spent as a research psychologist specializing in the field of infant development and early childhood education. She was a faculty member at the Institute for Child Study at the University of Toronto from 1948 until 1995, during which time she carried out a thirty year longitudinal study on institutionalized children.
She published the following books based on her findings:
- The security of infants (University of Toronto Press, 1959)
- The child and the institution: a study of deprivation and recovery (University of Toronto Press, 1966)
- The Flint Infant Security Scale for Infants 3-24 Months (Guidance Centre, Faculty of Education, University of Toronto, 1974)
- New hope for deprived children (University of Toronto Press, 1978)
- Pathways to maturity: insights from a thirty year study of deprived children (University of Toronto Press, 1996)