July 2, 2018 - Joint physical custody kids simply have better outcomes

Not only do JPC parents generally not have significantly less conflict or more cooperative coparenting relationships than SPC parents, JPC children have better outcomes than SPC children even after family conflict is taken into account. ... In the 19 studies that considered parental conflict, JPC children had better outcomes on all measures in 9 studies, equal to better outcomes in 5 studies, equal outcomes in 2 studies, and worse outcomes on one measure but equal or better outcomes on other measures in 3 studies.

Linda Nielsen (2018): Joint versus sole physical custody: Outcomes for children independent of family income or parental conflict, Journal of Child Custody, DOI: 10.1080/15379418.2017.1422414, at page 13.