From America's #1 family magazine, a guide to your three- and four-year-old's emotional and cognitive milestones. The little person running around your home will amaze and amuse you as he asserts his newfound independence- and provides a running commentary on every day's events and activities. In "Your Three- and Four-Year-Old," the expert editors of Parents magazine give a fascinating peek into your child's perpetually active mind, explaining why...