Hi
Re an article, the Nation Deceived report information supporting the social side. Also articles by Miraca Gross on acceleration pretty plentiful online and she talks alot about the social benefits based on her longitudinal study. Unfortunately I am replying on my phone so I can't paste in a link (well, I don't know how to anyway!) but they are font page on google.
Re hair - we have the same issue. I just wash it and brush though conditioner and leave it at that unless it's something special.