Sean loves the movie cars but he has low communication skills and cannot make a request to watch the movie. sean’s rbt begins to model saying the word 'cars' and then immediately turns on the movie. eventually, sean makes the 'c' sound. sean’s rbt begins turning the movie on when he makes that approximation. later, sean adds the 'a' sound saying 'ca'. again, his technician stops reinforcing the previous approximation, and only reinforcing the 'ca'. finally, sean can say the entire word 'cars' when he wants to watch the movie. what process sean acquire this skill?

Americans often speak of their country as one of several large regions.  these regions are cultural units rather than governmental units --  formed by history and geography and shaped by the economics, literature and folkways that all the parts of a region share. what makes one region different from another? a region's multicultural heritage as well as distinct demographic characteristics like age and occupation make regions different and special. within several regions, language is used differently and there are strong dialects. there are also differences in outlook and attitude based on geography.