One of the founders of behavioral economics, who incorporated human quirks into the study of how people make economic decisions, has died. Daniel Kahneman was 90.

A new study finds finance professionals fail at their jobs in a surprising way. There are lessons for all of us.

We speak with the Nobel Prize-winning founder of behavioral economics about the new — and last — version of his classic book, Nudge.

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.