Complex Cases which come before Family Courts around the world need the best possible information about all those involved, adults and children. In most Family Court matters it is the vast knowledge base of the social sciences and especially psychology that is best going to aide in high quality decisions making and successful outcomes. This presentation will look at how current and up to date psychological science and its knowledge base can inform and support both the participants and decision making in the more complex cases that come to Courts (High Conflict, Resist Refuse, Hague etc).For practitioners it encourages a review of how up to date your engagement with your science is and for lawyers and judges (and indeed parties) it will give you a sense of what you should be seeing in the reports coming before you.