By SAM WANG and SANDRA AAMODT Published: September 24, 2011, Sam Wang is an associate professor of molecular biology and neuroscience at Princeton. Sandra Aamodt is a former editor in chief of Nature Neuroscience. They are the authors of “Welcome to Your Child’s Brain: How the Mind Grows From Conception to College." THIS fall, one in 11 kindergarten-age children in the United States will not be going to class. Parents of these children often delay school entry in an attempt to give them a leg up on peers, but this strategy is likely to be counterproductive. If you would like to read more please click here to go to the New York Times.