Babcock, Wang and Loewenstein found that

Some tips to manage negotiation impasses are: Identify the root cause: Understand why the impasse occurred in the first place. Possible causes include mismatched expectations, poor communication, personality conflicts, or psychological barriers. Use active listening: Show that you care about the other party and their interests by paying attention, reflecting, summarizing, and asking open-ended questions. This can help build trust, create a better understanding between parties, and identify common ground. Generate alternatives: Create alternatives that can satisfy both parties' needs and... Show more

Some tips to manage negotiation impasses are:
Identify the root cause: Understand why the impasse occurred in the first place. Possible causes include mismatched expectations, poor communication, personality conflicts, or psychological barriers.
Use active listening: Show that you care about the other party and their interests by paying attention, reflecting, summarizing, and asking open-ended questions. This can help build trust, create a better understanding between parties, and identify common ground.
Generate alternatives: Create alternatives that can satisfy both parties' needs and interests.
Involve a third party: A third party can help facilitate the negotiation process and resolve the conflict.
Take a break: Give everyone the opportunity to consider their position and return to the discussions feeling fresh.
Learn from the experience: Try to find common ground, create value, and build rapport. 

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