First-time fathers seem to experience a steeper decline in relationship satisfaction in the first two years post-partum than second-time fathers, who appear to recover lost relationship satisfaction by the time their second child is 14 months old, according to a study published August 30, 2023 in the open-access journal PLOS ONE by Judith T. Mack and Lena Brunke from Technische Universität Dresden, Germany, and colleagues.