Abstract
Child custody evaluators frequently encounter 3 complex problems: assessment of highly contested cases; how to help the court, attorneys, and clients struggle with the ambiguity of the "best interest" standard; and ethical issues in assessing the children's preferences for their primary custodial parent. The purpose of this article is to describe the methodological implications of recent custody evaluation guidelines and recent research. Recommendations include reliance on family-process oriented diagnostic approaches and functional assessment methods, use of evaluation methods in which relevant parties have an opportunity to state their views and rationale concerning the children's best interests, and understanding of the content areas relevant to assessing children's custodial preferences at different developmental levels