Anchoring and Adjustment

Anchoring and adjustment is a mental shortcut where we rely too heavily on the first piece of information offered when making decisions. For example, if a car is first priced at $20,000, a later “discounted” price of $14,000 can seem like a bargain, because our judgment is anchored by the initial high number. We adjust our evaluation from that anchor, but typically not enough to assess the true value independently. Try this: When someone gives you a starting number, pause and consider what you would think without that initial suggestion.

Anchoring and adjustment works in two steps: first you latch onto an initial value (the anchor), then you move away from it (adjustment), but usually not far enough. The anchor becomes your mental “starting point,” even when you know it might be arbitrary or biased.

Studies in psychology show that people use anchors for all kinds of judgments: prices, probabilities, even moral evaluations. Because careful adjustment takes effort, we tend to stop once a number “feels” reasonable instead of asking if it is truly accurate.

In everyday life, this shows up when a store lists a jacket at a high “original” price and then offers a big discount—the final price feels like a bargain mainly because it sits below the anchor, not because you compared other jackets. At work, a manager who sees one strong early performance review may unconsciously use it as an anchor when scoring later reviews, making later small mistakes seem minor.

In public life, early poll numbers or first headlines can anchor how voters interpret later information, making small changes look dramatic or minor depending on where the anchor sits. The effect is stronger when you are uncertain, rushed, or emotionally invested, and weaker when you have solid, independent information or deliberately seek multiple reference points.

We started with a quick choice question because anchoring often shows up most clearly when you compare options side by side and rely on a first number as your reference. To counteract it, you can set your own anchor based on external data, or consciously imagine different starting points before deciding.

Research on anchoring and adjustment shows that initial values strongly influence estimates and choices, even when people know the anchors are arbitrary. Studies also suggest that people typically adjust too little from these anchors, and that motivation and expertise only partly reduce the bias.

• Tversky & Kahneman (1974): Showed that random numbers, such as spins of a wheel, shifted people’s estimates of real-world quantities, revealing strong anchoring from irrelevant starting points. [1]
• Epley & Gilovich (2006): Argued that people anchor first and then adjust effortfully, finding that even when participants were warned and motivated, their adjustments from anchors remained systematically too small. [2]
• Furnham & Boo (2011): Reviewed anchoring studies across law, pricing, and forecasting, concluding that anchoring is robust but varies in strength with factors such as expertise, task type, and whether anchors are self-generated or externally provided. [3]
• Kahneman (2011): Framed anchoring and adjustment as a central shortcut of fast, intuitive thinking, illustrating its influence on negotiations, valuations, and everyday judgments. [4]

Not all studies find equally large anchoring effects, and some replications suggest that context and experimental design matter a lot. Strong domain knowledge, clear external benchmarks, or training in considering multiple comparison points can reduce anchoring. In real negotiations, anchors sometimes help when they are informed by good data, so the bias is most problematic when anchors are arbitrary, strategic, or unrelated to true value.