Lefties, righties and mixed-handers: The psyc...

For years, body image concerns and eating disorders were viewed as problems that primarily affected girls and women. But boys and men also struggle with body dissatisfaction, eating disorders, and body dysmorphia -- often in ways that go unnoticed. Roberto Olivardia, PhD, a clini ...  Show more

Too often, we treat sleep as something we can sacrifice when life gets busy. But a growing body of research finds that sleep is essential to both mental and physical health -- and that sleep problems can be a cause, not just a consequence, of conditions like depression and anxiet ...  Show more

Neal Shepperson asks, "What determines left or right handedness and why are us lefties in the minority?"One in ten people are left-handed, but where does this ratio come from and when did it appear in our evolutionary past?Hannah talks to primatologist Prof Linda Marchant from Mi ...  Show more

For at least the last 200,000 years, between 10-15% of the human population are left-handed and this fact has utterly left science baffled. In searching to explain handedness, all sorts of contradictory evidence has emerged, creating a fascinating mystery. Learn all about it i ...

In the early twentieth century, Robert Hertz, a French anthropologist, and Cesare Lombroso, the Italian criminologist, debated the causes and consequences of left-handedness. According to Lombroso, left-handed individuals were more likely to be criminals. Hertz disagreed. For him ...  Show more

Before we begin, you should know that there are approximately 930 million left-handed people in the world. But can dominant sides lead people to be better (or worse) in specific subjects? Actually yes. Left-handed individuals are better at mathematics. To reach this conclusion, r ...  Show more