Oddly Wired
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decision making

Your first impression of a price anchors every later decision.

The anchoring effect is a cognitive bias where the first piece of information offered influences all subsequent judgments.

Even when the anchor is clearly irrelevant, such as a random number, it shifts the final estimation toward that value. Once a number is in your mind, your brain struggles to adjust far enough away from it.

You are never making a fresh choice.

Where this comes from

Study
Tversky and Kahneman (1974), Science
What the check found
The definition accurately reflects the classic Tversky and Kahneman (1974) conceptualization, which remains the standard for anchoring despite ongoing debate over the underlying psychological mechanism.
Confidence
Well replicated

Related

One of these every day, and every one names the study it came from. When a finding is contested, it says so.