Mary Ainsworth was born in Glendale, Ohio, in December of 1913 (Biography, 2002). Ainsworth had two younger sisters and "a close-knit family" (O'Connell, 1983, 201). According to O'Connell, both of her parents graduated from Dickenson College. Her father earned a Master's degree in history. Ainsworth's mother taught for a while then started training to become a nurse, but was soon called home to care for her sick mother. Five years after her mother graduated, she married Ainsworth's father and became a homemaker. When Ainsworth was five, her father was transferred to a job in Canada working at a manufacturing firm,…