María José Serrano is a Full Professor of Linguistics at the Universidad de La Laguna (Spain). Her main areas of expertise include morphosyntactic variation from a discursive-pragmatic and cognitive approach, sociolinguistics and discourse analysis.
Miguel A. Aijón Oliva is a Professor of Spanish Linguistics at the Universidad de Salamanca (Spain). His research activity focuses on variation in grammar from functional and sociopragmatic viewpoints, particularly in mass media and digital environments.