Why the First Number Keeps Its Pull
Suppose someone mentions that a jacket costs $200, then asks what a similar one should cost. Even if the first price is irrelevant, it can shape the estimate. Psychologists call this anchoring: an initial number becomes a reference point for a judgment that follows.
The effect can arise with useful information, like a known price, or with an arbitrary figure. The mind treats the number as a starting place, even when there is no good reason to do so.
Why Adjusting Does Not Fully Correct It
People often try to compensate. They move their estimate away from the anchor—perhaps deciding the jacket should cost much less—but stop before they have fully recalculated from the evidence. That incomplete adjustment leaves the original number exerting a quiet influence.
Anchors can also shape what comes to mind. After hearing a high figure, a person may retrieve examples or comparisons that make a high estimate seem more plausible. The number need not be consciously accepted as relevant; it can still guide the search for an answer.
Where the Effect Shows Up
The same pattern can matter in negotiations, budgeting, and everyday guesses. A first offer can frame what counts as a reasonable counteroffer, while an initial estimate can influence later planning. People may believe they are making an independent judgment because they have changed the starting number, without noticing how much it still constrains the result.
A useful defense is to form an estimate independently before hearing someone else’s figure, then check it against concrete evidence. Once an anchor is in the conversation, the harder question is not whether you adjusted—but whether you started over.
