Raising children is one of the most rewarding and important, yet challenging, endeavors a person can undertake. To lament that babies are born without instruction manuals is a cliché, but it's a sentiment rooted in the uncertainty many parents feel as they make day-to-day decisions they hope will help their children blossom into healthy, well-adjusted, intelligent adults. That's not to say that advice—solicited and otherwise—isn't plentiful. There are literally thousands of books on the subject and a multitude of websites devoted to parenting. There are also numerous books and articles addressing specific findings from the science of child development. What's been lacking, however, are sources of reliable advice that bring together the scientific research and its real-world applications.