📜 Theorem, law or theory

Prospect theory

Teoría de las perspectivas

Date
1979 · confidence high
Place
Jerusalem, Israel
Credited to
Daniel Kahneman and Amos Tversky
Field
Knowledge & symbols

What was discovered

A behavioral-economics theory describing how people asymmetrically value losses and gains relative to a reference point, in contrast to the expected-utility theory of rational agents.

Developed from experimental studies by Kahneman and Tversky, begun during their collaboration in Israel.

What it led to

  • The birth of behavioral economics as a discipline
  • The 2002 Nobel Memorial Prize in Economics for Kahneman
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Sources✓ verified 2026-09-28