Miguel A. Aijón Oliva is an Associate Professor at the University of Salamanca (Spain). His work has been published in journals like Language Sciences, Language and Communication and Folia Linguistica. María José Serrano is a Full Professor at the University of La Laguna (Spain). Some of her publications are : Gramática del discurso (2006), Sociolingüística (2011) and Variación variable (2011).