What are the six strategies that can be applied in contentious situations?

(1)Reaching agreement on rules and procedures; (2)Reducing tension and managing the de-escalation of hostility; (2)Enhancing communication,particularly improving each party's understanding of the other's perspective; (3)Controlling the number and size of issues in the discussion; (4)Establishing a common ground on which the parties can find a basis for agreement; (5)Enhancing the desirability of the options and alternatives that each party presents to the other.