American feminist and author who explored the dynamics of identity and relationships between women of different generations.

Friday was educated at Wellesley (Massachusetts) College. She worked briefly as a reporter for the San Juan Island Times and as a magazine editor before turning to full-time writing in 1963. She has produced several books of popular psychology since 1973. Her first best-seller was My Mother/My Self: The Daughter's Search for Identity (1977), which argued that women of Friday's generation had been reared by their mothers to conform to a prefeminist ideal of womanhood from which they would have to struggle to liberate themselves.