Anchor your opening near your end of the ZOPA

Open ambitiously — but inside the plausible zone — to shift the expected settlement point in your direction.

Why it works

First offers anchor the negotiation. Within a ZOPA, the party who anchors closer to their end of the zone tends to achieve outcomes closer to their reservation price — not because of deception, but because the anchor creates a reference point that shapes subsequent adjustments. Modest openers systematically underperform.

How to do it

1. Before opening, decide your target: a point in the ZOPA that is favorable to you but still within the zone.
2. Open at or slightly beyond your target — but not so extreme it is dismissed as bad faith.
3. Be prepared to justify the opening with genuine reasons, not just assertion.

Evidence

First-offer anchoring is one of the better-supported effects in negotiation research. Galinsky & Mussweiler ran controlled negotiation experiments and found that the side making the first offer tended to reach a settlement nearer its own anchor. The direction of the effect has held up across a number of laboratory studies; the size of the advantage varies widely with context, and most of the evidence comes from simulated negotiations rather than consequential real-world deals. (rct)

Anchoring only works within a plausible range — extreme first offers outside the zone signal bad faith and can derail the process. The benefit of anchoring is greatest when your counterpart’s BATNA is weak.

Sources

• Galinsky & Mussweiler (2001), "First offers as anchors", Journal of Personality and Social Psychology

Common mistake

Opening in the middle of the ZOPA to seem "reasonable" — this is the costliest niceness in negotiation. It shifts the expected outcome toward the counterpart’s end without any concession in return.