Fully vaccinated people got the green light last week to resume much of their lives without masks. Behavioral experts say that as an incentive to get more people vaccinated, it's far from a sure bet.
We don't always behave the way economic models say we will. We don't save enough for retirement. We give money to charity. This week, why we act in ways that go against our "rational" self-interest.
Selling after a market plunge, financial experts say, just locks in the loss and prevents investors from participating in the rebound. But human psychology can make that advice excruciating to follow.
