What is Framing effect?
The framing effect is the tendency for people to react differently to the same information depending on how it is presented. A medical treatment described as having a ‘90% survival rate’ is perceived more favorably than one with a ‘10% mortality rate,’ even though the statistics are identical.
How it works
Tversky and Kahneman demonstrated this in their 1981 ‘Asian disease’ experiment, where participants chose between programs saving a certain number of lives versus a probabilistic outcome. When framed as gains (lives saved), people preferred certainty. When framed as losses (lives lost), they preferred the gamble. The information was mathematically equivalent, but the frame reversed preferences.
Applied example
A grocery store labeling beef as ‘75% lean’ sells significantly more than one labeling the identical product as ‘25% fat,’ because the positive frame emphasizes what consumers want to hear.
Why it matters
Framing effects reveal that rational choice depends not just on content but on context, which has profound implications for how medical risks, policy options, and product features are communicated.
