Why Kids Abandon Creative Play

The observation that play gets short shrift as children come of age in the Western world is surely as old and as perennial as that civilization itself. The Bible puts it thus: "When I was a child, I spake as a child, I felt as a child, I thought as a child: now that 1 am become a man, I have put away childish things." Turning their attention to the phenomenon, psychologists have asked what might be the causal factors. In the early 1900s, for instance, G. Stanley Hall argued that as children...

 Mother's Hormones Impact a Child's Propensity for Shyness

As we learn more about maternal hormones and their influence on the developing brain, scientists are beginning to propose actual biological mechanisms for the kind of folk prophecies that have been around for ages. One recent study, for instance, suggests that a child's shyness is determined, in part, by maternal hormone fluctuations during gestation. Researchers who interviewed several thousand preschoolers in both the United States and New Zealand noted a significant relationship between th...

 How Testosterone Affects the Brain

We last met the steroid hormone testosterone in fish and birds where it was rendering them more vulnerable to parasites by exaggerating their sexual ornaments. In recent years more and more evidence has been found that testosterone affects not just ornaments and bodies but also brains. Testosterone is an ancient chemical. found in much the same form throughout the vertebrates. Its concentration determines aggressiveness so exactly that in birds with reversed sex roles, such as phalaropes and ...