[Resumen extraído de la fuente original]

This paper discusses some methodological approaches to a study of the intersection between the phonetics and the ethnic identity in the paradigm of the perceptual dialectology. In order to explain the vitality of the a fala geolect (Cáceres, Spain), the author claims that Montgomery´s method of starburst charts can be used to identify a fala´s hypothetical non-belonging phonetic features, which may be highly prestigous among the speakers and used to create that language community´s local identity, different from the nearby majorities´ identities and eventually help to prevent the language convergence of a fala.