For posterity, here is an article discussing one such study. (They use both words.) http://www.washingtonpost.com/wp-dyn/content/article/2007/07/29/AR20070729

For posterity, here is an article discussing one such study. (They use both words.) http://www.washingtonpost.com/wp-dyn/content/article/2007/07/29/AR2007072900827_pf.html http://www.washingtonpost.com/wp-dyn/content/article/2007/07...