List of studies/analyses of Gregg, with links
I’ve found many more of these studies. Rather than posting each of them singly, here is the link to the list. I used the advanced search function on the site with “Gregg, and shorthand”. Here is what came of that: http://www.eric.ed.gov:80/ERICWebPortal/Home.portal?_nfpb=true&ERICExtSearch_Operator_2=and&ERICExtSearch_SearchType_0=kw&ERICExtSearch_SearchValue_2=&ERICExtSearch_SearchValue_1=Shorthand&ERICExtSearch_Operator_1=and&ERICExtSearch_SearchType_1=kw&ERICExtSearch_PubDate_To=2009&ERICExtSearch_SearchValue_0=Gregg+&ERICExtSearch_SearchType_2=kw&ERICExtSearch_SearchCount=2&ERICExtSearch_PubDate_From=0&_pageLabel=ERICSearchResult&newSearch=true&rnd=1245074443812&searchtype=advanced# (by Shorthand-learner for everyone)