By middle childhood, from 7-12 years of age, gifted children tended to be 2.5 centimeters taller than their peers, on average. Bright children are more likely to be nearsighted. Children up to about 140 IQ tolerate the ordinary school routine quite well, achieving excellent marks without serious effort. But above this status, children become increasingly bored. Children at or above 180 IQ are likely to regard school with indifference or positive distaste, for they find nothing interesting to do there.
Gifted girls are far less interested in traditional girls' play than unselected girls are.
Children who test very high tend strongly to work out forms of solitary, intellectual play. Intelligent children are, on the whole, more easily disciplined than children generally are, with a few exceptions. Because he learns everything quickly, the highly intelligent child is especially quick to discover what forms of conduct on his part bring him satisfactions. Those who test above 180 IQ are characterized by a strong desire for personal privacy. The more intelligent a person is, the less often can he or she find a truly congenial companion.