The idea that your personality becomes fixed in adulthood is deeply ingrained. You might think of yourself as an introvert, a worrier, or an organized planner and that’s just who you are. But it’s not ...

As a Ph.D. student, I wanted to understand the evolution of individual differences in fruit fly behavior—the building blocks of personality. My experiments involved measuring how my tiny subjects ...

For the last century, personality has been treated as set in stone. We viewed our traits as our underlying essence, shaping how we think about the world and how we behave. And we believed a ...

"Evolutionary biologists have long been interested in individual differences (Darwin, 1859), but often regard individual variation within a population as the raw material on which selection acts ...

Add Yahoo as a preferred source to see more of our stories on Google. Even fruit flies have personal preferences. Antagain/E+ via Getty Images As a Ph.D. student, I wanted to understand the evolution ...