The Relating Research to Practice website just posted a summary of what looks like a really interesting research paper: “Multiple routes for the development and pursuit of interests” by Brigid Barron.
Here’s a link to the Research to Practice summary: http://relatingresearchtopractice.org/article/119
Here’s a link to the paper’s abstract: http://www.karger.com/Article/Abstract/94368
I’ll probably have more to add once I read the original article.