Yes, and in many ways. In one study, researchers found that people with more Facebook friends had more grey matter in several important brain regions, although this might be because people who start with larger brains attract more friends.
Probably, but not necessarily. Body language varies with age, sex and culture, but some features are more or less universal. Even blind people who have never watched anyone else doing it throw their arms in the air when victorious and cross their arms when defensive.
Scared of flowers? Then don’t let that fear show in front of children. Scientists have found that children can become scared of apparently harmless objects if they see adults react in a frightened way.
Motion sickness in general is caused when your inner ear and your eyes disagree about whether you’re moving. When you read in a car, your visual field stays still but your inner ear detects the twists and turns.
Natural selection has favoured individuals with the capacity to feel bored because they are more likely to discover or create things that improve their survival chances, or to look for a new partner and so spread their genes more widely.
No-one is sure why we yawn. We do know that yawning increases with levels of some of the brain’s neurotransmitters, including dopamine and serotonin, and decreases with levels of the opium-like endorphins.
When you listen to a sad, reflective song, what colour come to mind? How about a happy, jaunty tune? Researchers have now shown that people tend to associate different colours with different songs, depending on how they make us feel.