There is a famous paper arguing the case for libertarian paternalism by using organ donation consent rates. Johnson, E. J., & Goldstein, D. (2003). Do defaults save lives?. Science, 302(5649), 1338-1339. The main result is this: So having opt-out drastically increases consent rates compared with opt-in. These countries have various other differences between them, but the effect size is huge.
Organ donation consent vs. actual rates
Organ donation consent vs. actual rates
Organ donation consent vs. actual rates
There is a famous paper arguing the case for libertarian paternalism by using organ donation consent rates. Johnson, E. J., & Goldstein, D. (2003). Do defaults save lives?. Science, 302(5649), 1338-1339. The main result is this: So having opt-out drastically increases consent rates compared with opt-in. These countries have various other differences between them, but the effect size is huge.