Amos Tversky
SchoolProspect Theory
Lived1937 – 1996
FromIsrael / USA
Prospect Theory

Amos Tversky

The frame shapes the choice

A cognitive scientist whose work with Kahneman exposed the systematic biases in how we decide.

Change how a choice is framed, and you change the choice.
— Amos Tversky

Who they were

Amos Tversky studied the quiet rules of thumb that guide human judgment — representativeness, availability, anchoring — and showed how reliably they lead us astray. With Daniel Kahneman he developed prospect theory and demonstrated that simply rewording a question, without changing its substance, can flip people's decisions. His precise, almost mathematical eye gave psychology a new rigor in the study of choice. Though he died before the Nobel was awarded, his fingerprints are all over the prize Kahneman received.

Famous books

What they left on the shelf

Their big idea

Prospect Theory

Daniel Kahneman and Amos Tversky found that people do not weigh risk the way pure logic predicts. We feel losses more sharply than equal gains, and the way a choice is framed can quietly tip which option we prefer.

Questions in their spirit

What they’d ask you

Sit with one. Answer online, or in the app.

All questions

Carry the idea forward

Tversky — What they’d ask you

Psipas asks you one small, honest question at a time — and builds the picture from your answers.