This document summarizes the findings of Emery's longitudinal mediation study. The study used random assignment to determine whether high conflict families filing for contested custody went to mediation or litigation. It found that 12 years later, families that went to mediation were much less likely to appear before a judge, and non-residential parents had significantly higher rates of contact and communication with their children compared to families that litigated. While the decisions reached in mediation and litigation were the same, the mediation process led to better co-parenting outcomes long-term by giving parents a voice, taking a long-term view, and helping them work through grief and learn co-parenting skills.