Until I became immersed in research on child development, I thought learning to read was a project confined to the years of kindergarten, first and second grade. But as countless studies have shown, preparing the brain to read starts long before a child has formal reading instruction. No wonder, then, that our country is full of campaigns to encourage parents to read books with their toddlers. No wonder parents today are told to engage their kids in back-and-forth conversations about pictures on the page.