Angela is ten years old. Her parents describe her as a bright girl. Yet Angela's teachers have told them that their child's reading ability is well below that of the rest of her class. Michael is eight. He is healthy, energetic, and his parents say he is always on the go. But Michael's problems have been piling up at school--his writing is illegible, his attention span is short, and his teacher complains that he cannot sit still. A psychologist discovered...