Abstract
Twin studies have generated numerous findings that have had substantial impact upon research conducted in psychological and medical science disciplines. Twin research has, however, been underutilized utilized as an information base relevant to decision making in the legal domain. Current empirical knowledge of twins and the various legal issues for which they offer implications are reviewed. Selected case studies of young twins, illustrative of a meaningful relationship between twin research and the legal field, are presented. A research program to further address issues raised by the collaborative efforts of twin investigators and legal experts is proposed.