Decision-Making Biases
Decoy effect
A third option changes preferences between two others.
What Is Decoy effect?
Decoy effect is a thinking trap where a third option changes preferences between two others.
How It Tricks You
It can make one option feel obvious before the tradeoffs have been checked.
Real-World Example
A medium popcorn makes the large look like a better deal.
Seen Online As
- The easiest option is starting to feel like the best one.
- I am defending the choice before comparing alternatives.
- The risk I can feel is louder than the risk I should calculate.
What To Ask Instead
Is one option included mainly to steer me?
Related Thinking Traps
Common Situations
Quick FAQ
What is Decoy effect?
A third option changes preferences between two others.
What is an example of Decoy effect?
A medium popcorn makes the large look like a better deal.
How do I spot Decoy effect?
Is one option included mainly to steer me?