A process often employed in "Group" or "Multi Party" negotiations to reach a decision or agreement by the involved negotiating parties. A unanimous decision is only achieved when all the negotiating parties are in total accord in making a decision or an agreement. Requires a group's decision to be unanimous—as opposed to a majority vote decision. Unanimity forces a group to consider a broader range of alternatives to expand the pie and create mutually beneficial trade-offs and assure the interests of all group members are satisfied. Studies indicate that groups operating under a unanimity rule reach more efficient outcomes than groups operating under majority rule.