In the last decades we have seen significant changes in the family, resulting from demographic, social, economic and cultural changes. Regardless of the typology, the family plays a decisive role in the development and adaptation of its elements, namely, the child. Previous studies emphasize the interdependent relationship between the marital relationship and the exercise of parenting and its impact on children's adjustment. Parental cooperation or conflict in a co-parenting situation may facilitate the child's adjustment to parental separation or, on the contrary, enhance vulnerability. Currently, we see an increase in post-separation situations of alternate residence for children. The main objective of this project is to investigate the relationship between family variables, parenting, coparenting with different parental responsibility regimes, and adjusting the child from the perspective of fathers and mothers from different countries. We intend to contribute to the theoretical models of parenting, and to provide useful information for professionals who work for the family's well-being and the child's supreme interest.