http://www.articleheaven.net en-us editorial@articlealley.com Drs. Acredolo and Goodwyn have conducted over two decades of scientific research on the use of sign language with hearing babies, including a longitudinal study funded by the National Institutes of Health. Below are the findings from that study. More t... http://www.articleheaven.net/baby-sign-language--improves-childrens-iq-scores-1100301.html 21st September 2009