Life is one long heady blend of negotiation and the results of negotiations.
If this is so, then it follows that the ability to negotiate effectively is a fundamental building-block for success and satisfaction in business, clinical, family and social life. Negotiation can be defined as a process where parties with conflicting aims establish the terms on which they will co-operate. Answer - all the time. Note that the 'conflicting aims' could be as little as which movie will be watched on TV tonight, through to those of the parties involved in the Middle East or Northern Island peace processes. It's also important to note that there is no other purpose to negotiation than needs satisfaction.