Introverted children are often misunderstood, even by their parents, who worry about them. Engaged by their interior world, they're often regarded as aloof. Easily overwhelmed by too much stimulation, they can be seen as unmotivated. Content with just one or two close friends, they may be perceived as unpopular. Parents fret that they are unhappy and maladjusted. But the truth is quite different: Introverted children are creative problem solvers...