Nudge theory’s popularity may block insights into improving society

Two scientists want their peers to dream big when it comes to changing societal behavior

a sign outside a bar reading 'a shot for a shot' with a picture of a vaccine needle, advertising a free drink for people who got a COVID-19 vaccine

In June 2021, a bar in Portland, Ore., offered people free alcohol if they got a COVID-19 vaccine. Such “nudges” have become a popular area of behavioral science research, but ignore larger questions, such as why people don't get vaccinated, two scientists argue.

John Rudoff/Sipa USA/AP Images

Imagine removing a branch of the U.S.