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 effects in negotiation are among the most replicated findings in the field. Negotiators who open first (with an ambitious but plausible anchor) reliably achieve better outcomes. (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.