Mind & EverydayFact
One checkbox on a form decides organ donor rates.
In 2003 Johnson and Goldstein compared European countries. Where people must actively opt in, 4 to 28 percent were registered donors, Germany at about 12 percent. Where people must actively opt out, rates were above 85 percent, Austria at 99 percent. The default beats any persuasion campaign.
Useful: Set your defaults so that doing nothing is the right thing, like an automatic savings plan.
Source: doi.org