Developments from the year gone by point to major trends that may influence the political trajectory this year.

Data from five large-scale studies allows for an estimate of how much trait antisociality you can have before things go bad ...

More "personalient" individuals are happier across the lifespan, an effect that snowballs over time. But what does it mean, ...

They throw a ball around the room to indicate whose turn it is to speak. "When a man talks about his emotions he is often ...