Here are the links for online previews of two books mentioned in Dr. Droge's Intelligent Children: A Brief Introduction To What Today's Smart Parents Know About Increasing A Child's Intelligence:

Sternberg, Robert. J.. Beyond IQ: A Triarchic Theory of Intelligence.  Cambridge: Cambridge University Press, 1985.  http://books.google.com/books/about/Beyond_IQ.html?id=jmM7AAAAIAAJ 

Tizard, Barbara and Martin Hughes.  Young Children Learning.  New York: Wiley, 2008.
http://books.google.com/books/about/Young_Children_Learning.html?id=T6nDYCVZjCoC