Framing Effects
How the same information leads to different decisions depending on presentation.
Framing is the most pervasive form of persuasion — and the hardest to detect because it doesn't change any facts. It changes how those facts are presented.
The classic demonstration is Kahneman and Tversky's Asian Disease Problem (1981):
A disease is expected to kill 600 people. You must choose between two programs:
Frame A (Gains): Program A will save 200 people. Program B has a 1/3 chance of saving all 600 and a 2/3 chance of saving nobody.
Frame B (Losses): Program C will result in 400 deaths. Program D has a 1/3 chance that nobody dies and a 2/3 chance that all 600 die.
Programs A and C are identical. Programs B and D are identical. But when framed as gains (lives saved), 72% chose the certain option (A). When framed as losses (deaths), 78% chose the gamble (D).
The framing changed the decision even though the outcomes were mathematically the same. This is loss aversion at work: losing feels roughly twice as bad as gaining feels good.