Using data from the Fragile Families and Child Well-being Study (N
= 1,492 couples), we assessed stress, health selection, and
couple-crossover hypotheses by examining (1) the bidirectional association
between economic hardship and depressive symptoms one, three, and five years
after the birth of a child; (2) the association between economic hardship and
depressive symptoms on relationship distress for both parents; and (3) whether
the associations vary by marital status. The results suggest a pernicious cycle
for mothers after the birth of the child. Economic hardship increases
depression, but maternal depression also increases economic hardship. These
reinforcing mechanisms increase both mothers’ and fathers’
relationship distress. Taken together, policies aimed at strengthening
couples’ relationships should work in tandem with economic and mental
health policies to reach optimal outcomes for couples with a young child. Effect
patterns were generally consistent between married and cohabiting couples, with
some variation in levels of statistical significance.