The Head Lines section of Scientific American Mind's September/October issue mentioned the following articles in brief. Click on the links to learn more about them.
- A tendency to pursue numerous richly stimulating activities strongly predicts creativity.
- Your "roaming entropy," or the frequency and variety with which you get out and about, likely affects your brain health. In a study of adult mice, the animals with higher roaming entropy had a greater proliferation of adult-born neurons.
- People with anorexia think they are bigger than they really are. Now evidence shows this body schema informs unconscious behavior.
- How moral is your money? In a new study, people valued their earnings less when the source was ethically dubious.
- Contagious yawning emerges in children at the age of five or six. It may relate to empathy, which also develops around this time.
- Do you tend to second-guess your choices? To commit to a decision, place barriers between you and the roads not taken.
- Marijuana use may harm the teenage brain. Recent research suggests that smoking pot at younger ages drives down IQ.
- Watch out for "email apnea." Some 80 percent of people may briefly stop breathing or breathe shallowly when looking at a screen.
- Bad news for bexarotene, a cancer drug touted as a boon for Alzheimer's disease: four labs have failed to replicate earlier effects.
- Humans can acquire entirely new information while they sleep.