Key points are not available for this paper at this time.
Cheryl Townsend Gilkes, Dual Heroisms and Double Burdens: Interpreting Afro-American Women's Experience and History, Feminist Studies, Vol. 15, No. 3, Feminist Reinterpretations/Reinterpretations of Feminism (Autumn, 1989), pp. 573-590
Gilkes et al. (1989) studied this question.