Many of us believe there are two driving forces behind the person known as “you”: nature and nurture. But, according to personality and motivational psychologist Brian R. Little, there’s a third: projects.

Before you answer “Yes!” — look at these three quick scenarios. And if you learn you’re a bit bird-brained, remember: intelligence is all relative, says psychologist Ben Ambridge.

Research has found that having a backup plan might actually sabotage your efforts toward Plan A. Before you set up your safety net, read these lessons from women scientists.

Déjà vu — we all know it when we feel it, but could we make it happen in someone else? Psychology researcher Anne Cleary figured out a way.

Whisper it, but obsessive navel-gazing can be satisfying. Problem is, it can also be damaging. Organizational psychologist Tasha Eurich suggests ways to escape the loop of rumination and learn how to move forward for real.

Researchers are finding that your mental patterns could be harming your telomeres — essential parts of the cell’s DNA — and affecting your life and health. Nobel-winning scientist Elizabeth Blackburn and health psychologist Elissa Epel explain.

Essential, data-derived advice for leading a happy, healthy life, shared by psychiatrist Robert Waldinger.