The Sales Psychology Files · #06 · ~5 min read
Anchoring in Reverse: Why the First Number You Don't Say Matters More Than the One You Do
Anchoring is probably the most well-known bias in this entire series, thanks to Daniel Kahneman and Amos Tversky's foundational work on judgment under uncertainty. The standard sales advice from it is simple: say a high number first, and everything after gets judged relative to that anchor. That advice isn't wrong. It's just incomplete, and the incomplete version is where the manipulation creeps in.
The standard version, and its problem
Classic anchoring: the first number in a negotiation exerts disproportionate influence on where it ends up, even when that number is arbitrary or the other party consciously knows it's a tactic. This is genuinely one of the most replicated findings in behavioral economics. The sales-training version of it is: quote high, negotiate down, look generous.
The problem is that this version treats the anchor as a number to manufacture rather than information to manage. An anchor that's disconnected from real value doesn't just risk looking manipulative — with a sophisticated buyer, it actively damages trust the moment they sense the number was picked for effect rather than accuracy (the same failure mode as #03).
The reverse version: the anchor you deliberately don't set
Here's the more interesting, less-taught application: sometimes the highest-leverage move is to let the other side anchor first, and stay silent.
Most negotiators are desperate to fill silence, especially around money. If you ask an open question about budget or value and simply wait, the other person will very often set an anchor themselves — frequently one more favorable to you than anything you'd have proposed. And because it's their own number, they don't discount it as a tactic the way they would yours. It's now their anchor, defended by their own reasoning, not something they're pushing back against.
This is "anchoring in reverse" in the sense that matters: instead of using anchoring bias on someone, you let them anchor themselves, and you simply don't rush to replace their number with your own.
How this plays out honestly
- Ask, then hold silence. "What were you expecting to invest in solving this?" — then actually wait. The urge to fill that silence with your own number is strong; resisting it is the entire technique.
- Don't manufacture your own inflated anchor to compensate. If their anchor is lower than you'd hoped, the honest move is a real conversation about value and scope — not a countered, inflated number designed to "re-anchor" them. That's just the classic manipulative version wearing a disguise.
- Treat their anchor as real information, not a starting position to demolish. If someone anchors low, that's often telling you something true about their perceived value or budget reality — worth exploring, not just negotiating against.
Where this connects to the rest of the series
This is really the same discipline as #04's door-in-the-face caveat and #02's take-away close: the honest version of every technique in this series involves restraint — not saying the thing, not filling the silence, not manufacturing the number — more than it involves a clever line. Anchoring in reverse is possibly the purest version of that: the entire technique is simply not talking.
The honest caveat
This doesn't work if you're not actually prepared to accept where the silence leads. If someone anchors far lower than you can work with, the honest next move is to say so plainly — not to fake enthusiasm for a number that doesn't work, and not to manipulate them off their own anchor with pressure. The silence earns you real information. What you do with that information still has to be honest.
Previously: disqualification as a weapon. Next: the autonomy trap.