I vacillate between feeling like this professor is a total poser and admiring her pleasantly mixed English. On the one hand, it's pretty obvious that the professor is not English. Her accent doesn't sound natural--I can hear the American sounds, which make the British ones sound forced and a bit fake. A nasty side of me wants to scorn her for not being true to herself.
On the other hand, the linguist in me sees the need or even desire to code switch. When in Italy, I wouldn't try to speak Italian with an English accent, so why speak American English in Britain? The obvious difference is that this is a difference in language rather than dialect; English is actually my native language, and I already speak it "correctly." At least correctly for one part of the world. But it makes sense that after 10 years of immersion in another dialect, your accent would soften and melt away into the speech of those around you. What about after 3 years? 6 months? It's interesting to me that I do feel a bit of disdain for those who adapt their accent immediately, but admiration for those who learn a foreign language well. But it's disdain laced with envy. I want to pick and choose how I speak without any social repercussions.
When I add just a tidge of lilt to my intonation, I'm often mistaken as Irish. This completely delights me (I wonder if they can somehow read my Irish-loving soul and just attempt to flatter me), but is also surprising and makes me feel slightly guilty. There are similarities between some dialects of American and Irish English (listen to this audio clip), but really not enough to have been mistaken 4 times now. Sometimes I consciously soften my American sounds and predictable intonation/stress pattern, but sometimes it just happens. When everything you hear sounds one way, it's normal to start adjusting. But then maybe I'm just a poser too.
Apparently, however, dialects don't always merge seamlessly together. Charlie Hunnam, who plays an American biker dude on Sons of Anarchy, is British (and a Geordie at that--you should definitely listen to that video), and his natural accent is now a complete wreck. Prepare to be entertained.
