Lesson preview · Mental shortcuts
Mental shortcuts: framing and anchoring
~8 min · Free to read
You have 10 minutes and 15 dollars to buy food for a barbecue. You won’t compare the price per gram of every pack or read every label. Nobody does. You grab what looks right, and usually that works fine.
To decide fast, your brain uses mental shortcuts: quick rules of thumb, such as “the brand I know is probably fine”. They usually help. But some go wrong in predictable ways, and anyone who writes a price tag or a label can take advantage of that. Try the activity first, before you know what it tests.
Two shortcuts were at work. The Everest number was picked at random, yet numbers like it drag guesses towards them: that pull is anchoring. And the same beef tends to sound better as “75% lean” than as “25% fat”: that effect of wording is framing. Neither the number nor the label changed a single fact, yet both can change people’s answers. They are biases: mistakes people make in a predictable direction.
Key Term
Framing: same facts, different words
Framing is the way the facts are described. “90% survive” and “10% die” carry the same information. So do “75% lean” and “25% fat”. Yet the wording can change what people choose.
In a 1981 study, people chose how to fight an imaginary disease expected to kill 600 people: a sure plan or a gamble. One group read that the sure plan meant “200 people will be saved”, and 72% chose it. Another group read that the same plan meant “400 people will die”, which is the same outcome, and 22% chose it. This is robust: a 2014 repeat with more than 6,000 people found a smaller but clear effect.
Firms choose frames on purpose. The same 1981 paper describes a debate over passing some of the cost of handling credit-card purchases on to shoppers. The credit-card industry asked to call the price gap a “cash discount”, not a “credit-card surcharge” (an extra charge for paying by card). The gap is the same either way. The researchers explained why the label mattered: people dislike paying a surcharge more than they dislike missing a discount.
Key Term
Anchoring: the first number sticks
An anchor is a number you meet first that pulls your later guesses and judgements towards it. The pull shows up when you’re asked to compare (“more or less than 600?”), and when you’re simply told a number first. This is robust: in a 2014 repeat, a number stated before the question pulled guesses towards it in all 36 groups tested.
Watch for anchors like these:
- A phone advert: “Was 800 dollars, now 350 dollars.” The 800 invites you to judge 350 against it.
- The first offer when you haggle over a price.
- Suggested amounts on a tip screen or a donation form.
Trap · Common Misconception
"A number that tells me nothing can't affect me"
The Everest number was drawn at random, so it told you nothing about the mountain. Yet in the research, numbers like it still pulled guesses towards them.
The evidence for other anchors is weaker. In a 2008 study, people guessed what share of a new phone’s sales would be in their own country. They guessed a bigger share when it was named “P97” than when it was named “P17”. A 2018 repeat with 6,826 people found almost no difference, so it failed to replicate. Numbers people know are meaningless, such as the last two digits of an ID number, give mixed results (studies disagree).
So guard most against anchors you’re invited to compare with, like a “was” price.
Tip
How to see through a frame or an anchor
- Flip the frame. Turn “75% lean” into “25% fat”, or “90% survive” into “10% die”. If the two versions feel different, remember that the facts are the same. Only the feeling changed.
- Compare with other shops, not the anchor. Ignore “was 800”. Ask what the same phone costs elsewhere.
- Set your own number first. Decide what you’d pay before you look at the price tag.
Check yourself · no marks
A charity’s form suggests gifts of 50, 100 or 200 dollars. Before you saw it, you planned to give 20 dollars. Which shortcut is the form using, and how could you resist it?
Commit to one first. Guessing and being wrong beats reading the answer cold.
Practice · 1 / 5
A shop sign says a jacket is “Was 400 dollars, now 150 dollars”. Mia buys it straight away because it feels like a great deal. What best explains that feeling?
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