Or you might consider checking out — by this I mean from the library — his book Just Babies: The Origins of Good and Evil. The following quote is from an interview posted on Amazon.com:
Q) What’s up with the title?
A) It’s meant to be playful, because it has two quite different meanings. Just Babies can express a reasonable skepticism about the abilities of these tiny creatures—what do you expect of them, they’re just babies? But of course “just” also derives from justice—as in “a just society”—and so the title captures one of the main arguments of the book, which is that we are born as moral creatures. We start off as just babies. I know this sounds like a remarkable claim, but I hope that my book will convince people to take it seriously.
Q) What made you choose to write this book at this moment?
A) These are exciting times for anyone interested in morality. There are major developments in areas like social neuroscience, evolutionary theory, and moral philosophy. And several research teams—including my own at Yale—are making surprising discoveries about the moral lives of babies and children. I think that now, perhaps for the first time in history, we have scientifically informed answers to some of the questions that matter most: How is it that we are capable of transcendent kindness—and unspeakable cruelty? How do evolution, culture, parenting, and religion conspire to shape our moral natures? How do we make sense of people’s strongly held opinions about abortion, gay marriage, affirmative action, and torture? And how can we become better people? Just Babies tries to answer these questions.