ZOPA - Zone of Possible Agreement
Version 1.0.0 · Updated 2026-07-30
CORE DEFINITION
The overlap between the buyer's maximum price and the seller's minimum price. If there is no overlap (negative ZOPA), no negotiation technique can work; if there is overlap, the essence of negotiation is to decide who can cut a larger slice of the pie within that zone.
SCAFFOLDING EFFECT
Reduce cognitive load
Negotiation positioning. Before opening your mouth, estimate the other party's bottom line (BATNA). If no ZOPA is found, do not waste time bargaining; either change the bottom line or add new variables (such as delivery time, after-sales service) to create a new ZOPA.
Anchor fast decisions
The overlap between the buyer's reservation price and the seller's reservation price determines whether negotiation is possible; when ZOPA exists, the allocation is about 'who cuts a larger slice', and when it does not exist, any technique is ineffective. The essence is the valuation/bottom-line structure, not rhetoric.
MINIMUM ACTION
In progress 0/5Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Zone_of_possible_agreementverified
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