An examination of associations between belief in the future of instrumental support (availability of child care, temporary housing, and financial assistance), the subsequent reaction to inadequate support, and the experience of a major depressive event in a socioeconomically diverse sample of new mothers from the Fragile Families and Child Wellbeing Study, a Longitudinal sample of 4,898 children, including 3,712 children born to unmarried parents and 1,186 born to married parents in 20 large American cities