Well, American Dialects Have Been Studied For

It Appears That The Present-day Form Of African American English Is Not The Inheritance Of The Period Of Slavery, But The Creation Of The Second Half Of The 20th Century.

I Have Resisted The Term Sociolinguistics For Many Years, Since It Implies That There Can Be A Successful Linguistic Theory Or Practice Which Is Not Social.

I Am Now Completing Research Supported By Nsf And Neh That Is Mapping Changes In The English Language Through All Of North America, For Both Mainstream And Minority Communities.

However, Research In The Years That Followed Found That In Many Of Its Important Features, African American Vernacular English Was Becoming Not Less, But More Different From Other Dialects.

But Unlike European Countries, America Has Never Finished A Map Of The United States, Only The Eastern United States Is Covered And A Few Spots Here And There.