MENTAL MODEL · M0160

Ackerman Bargaining

BehaviorHigh supportPsychology

Included

Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

A bidding strategy used by FBI negotiators. Set a target price, then bid in four rounds according to the ratio "65% -> 85% -> 95% -> 100%", and finally add a non-integer odd amount (such as $101.53) to make the other party feel that you have calculated to the limit.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

A price anchoring operation manual. When bargaining or negotiating salary, do not make random offers. Use precise non-integers and decreasing increments to convey the psychological hint that "I have reached my limit".

anchor

Anchor fast decisions

The Ackerman Bargaining method, promoted by FBI negotiators, creates a "reached the limit" signal through three elements: "extreme anchoring + decreasing increments + precise odd numbers". Start with a low offer (e.g., 65%) to lower the other party's anchor, then make small increases (85% -> 95% -> 100%) to show approaching the limit, and finally use a non-integer (e.g., $101.53) to imply precise calculation to the limit, making it difficult to concede further.

MINIMUM ACTION

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Practice this model in one real situation:

Set your true target price (reservation price). 2. Prepare four levels of offers: approximately 65%, 85%, 95%, 100% (relative to the target). 3. Make only small, decreasing concessions each round, never a large one at once. 4. End with a precise non-integer to convey a sense of "calculated to the limit". 5. Combine with techniques like "emotional labeling" to avoid confrontation.

Check to track your progress (stored locally)

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Source support: Explicit

link
cropwatch.unl.eduhttps://cropwatch.unl.edu/2018/gold-star-negotiations-applying-ackerman-bargaining-methodZH · Explicit
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