Interpersonal skills is very important in negotiation. I believe a good negotiator should have some qualifications- for example:
– Preparation and planning skill.
– knowledge of the subject matter being negotiated.
– Ability to think clearly and rapidly under pressure and uncertainty.
– Ability to express thoughts verbally.
– Listening skill.
– Judgment and general intelligence.
– Integrity.
– Ability to persuade others.
– Dealing with Difficult Situations.
– Seeking clarification on complex points.