While you sleep, you may look still and peaceful from the outside. Inside, though, your body is busy running a complex overnight program that resets your brain, hormones, and even your immune system. Some of the strangest parts of that program only show up when something goes wrong, which is why understanding them can help…
You live in a world where seatbelts click automatically, kids wear SPF 50 to walk to the mailbox, and food labels read like chemistry exams. Not long ago, everyday life looked very different, and many ordinary habits from just a few decades back would make you cringe now. Look closely and those old routines reveal…
You don’t remember most of what you remember. You re-remember it, which is not the same thing. Memory is the most-trusted faculty most of us own and also, on inspection, the most extensively rewritten. Five things your brain does to memory without consulting you, each from a primary source, and each weirder once you realize…
The grocery store you walked into this week was designed by someone with a graduate degree, who based the layout on a half-century of peer-reviewed behavioral research, who knows things about how you make decisions that you don’t know about yourself. The pricing, the music, the smell of the bakery near the entrance, the order…
There’s a category of behavior that feels biological. You walk a certain way. You sleep a certain way. You read a face and “just know” the person is angry. You assume marriage starts with romantic love. Most of these feel so automatic that questioning them feels silly. They’re cultural scripts — installed early, performed unconsciously,…
The feeling of being watched is one of the oldest signals the human nervous system runs. It can be triggered by an actual person, by a security camera, by a poster of eyes on a wall, by a mirror in a hallway, and by literally nothing at all. Each version produces measurable behavioral change —…
In 1979, two psychologists at Stanford and the University of British Columbia published a paper called “Prospect Theory: An Analysis of Decision Under Risk” in the journal Econometrica. The authors were Daniel Kahneman and Amos Tversky. The paper was dense, technical, and unusual for the journal — which mostly published mathematical economics. It became one…