If you haven't yet, you might try searching for articles in iConn's "Educator's Reference Complete" database:

www.iconn.org

-->Resources A-Z

---->Educators Reference Complete

"a selection of academic journals, hundreds of full-text reports, and many premier reference sources. Included content focuses on educational principles, child development and psychology, and best practices in education. Majority of the full-text titles included are also found in the ERIC database. The database is updated daily and provides 24-hour access from school or home. Educators Reference Complete contains 8,833,483  articles updated as recently as August 20, 2012. All articles have been published between 1980 and 2012."

Sincerely,

Kristie