What is the test for arbitrator's decision in a family law mediation/arbitration matter?

Mediation/arbitration is an important method by which family law litigants resolve their disputes. Indeed, the courts encourage parties to attempt to resolve issues cooperatively and to determine the resolution method most appropriate to their family. The mediation/arbitration process can be more informal, efficient, faster and less adversarial than judicial proceedings. These benefits are important with respect to parenting issues, which require a consideration of the best interests of children. The decision of an arbitrator, particularly in child related matters, is therefore entitled to significant deference by the courts: see Patton-Casse v. Casse, 2012 ONCA 709, 298 O.A.C. 111, at paras. 9, 11.