Also see Ellen Winner from Harvard’s Project Zero (and Lois Hetland), “Studio Thinking”:
http://www.boston.com/news/globe/ideas/articles/2007/09/02/art_for_our_sake/
Studio and Creative Habits seem closely related to Deliberate Practice Theory. Nutshell: http://freakonomics.blogs.nytimes.com/2008/03/11/how-did-a-rod-get-so-good/
random, good advertising: http://www.youtube.com/watch?v=wXIfU-87TZo—–