Sex

At least for humans, this most basic act is anything but simple. As the pioneering sex researcher Alfred Kinsey put it, the only universal in human sexuality is variability itself. Within the universe of intimacy and pleasure that sex affords, however, there's a lot of room for error. From the behavior itself to our orientations, sex never fails to be a provacative topic.

Education

From language acquisition to problem solving to social skills, questions of how we learn are central to understanding human development. Formal education has its share of critics—can psychology lead the way to true reform?

Evolutionary Psychology

Our bodies evolved over eons, slowly calibrating to the African savanna on which 98 percent of our ancestors lived and died. So, too, did our brains. Evolutionary psychology postulates that the mind is shaped by pressure to survive and reproduce. We jealously guard romantic partners and cherish our closest relatives above all others, lest we fail to pass on our genes.