Abstract: Most negotiation theory assumes direct interaction between two principals. Negotiating on Behalf of Others challenges this view and suggests that because most people negotiate on behalf of others, a radical shift is required in the way we think about (and conduct) negotiations. It offers a framework for understanding the complexity and effects of negotiating on behalf of others and explores how current negotiation theory can be modified to account for negotiation agents. Negotiation agents are broadly defined to include legislators, diplomats, salespersons, sports agents, attorneys and committee chairs - anyone who represents others in a negotiation. (From the Publisher)