My 4 year old daughter has all of a sudden changed her accent drastically to one that is awful. The pronunciation is totally incorrect and its freaking me out. The more I correct the worse it becomes. Should I take her for speech and drama classes?
It might be worth getting her hearing checked, a sudden change might indicate a change in the feed-back loop between what she says and what she hears.
At age 4, my son's adenoids closed off his Eustachian tubes thus filling his inner ears with liquid and reducing his hearing significantly. Many children's Eustachian do not fully develop until the age of 8.