What creates accents? Is it purely psychological, or is there some physiological element in play?
• Accents develop from the relative isolation of populations. The pronunciation and language of each population changes in different ways and accents are the result. This happens in much the same way that isolation of populations leads to different evolutionary outcomes. Changes to language and pronunciation come from a range of sources: immigration, the introduction of new words, the popularity of different influences like music, random changes, and so on.
The root cause of most accents is psychological not physiological. While the shape of the mouth…
