Despite how natural friendship can feel, people rarely stop to analyze it. How do you know when someone will make a good friend? When is it time to move on from a friendship? Oftentimes, people rely ...

Friendship isn’t a tit-for-tat balance sheet, but that’s how researchers have traditionally defined it. New studies are refining the model to be less about transactions and truer to real life.

I'm going to say something that sounds contradictory at first, though I swear it does make sense eventually: You should always study in silence, but a little noise can be helpful for remembering ...