Consumer behavior—how people buy and use goods and services—is a rich field of psychological research, especially for companies trying to sell products to as many potential customers as possible.

The other day, I was talking to a guy with a physics background. He said that he is very fond of the field of psychology, but expressed concern about the fact that, unlike physics, it is “a soft ...

Want someone to change their behavior? Psychology says nagging doesn’t work, but this mind trick does Bigging others up with gratitude is more likely to motivate them to change their behavior than ...