Quick! What's the newborn's least develolped sense?

May I just say that taking Child Psych pass/fail was an awesome idea? Not because it's a hard class, the opposite is true, actually, but because I don't have to study! I go to lecture every day because I like it and it's interesting to me. But when it comes to the test I can easily pass just on common sense and the fact that I showed up. I had a no-stress test taking experience this morning. It was pleasant.