David Lasagabaster is Professor of Applied Linguistics at the University of the Basque Country UPV/EHU, Spain. He has published on CLIL, EMI, attitudes and motivation, and multilingualism. He has published widely in international journals and books. Among others, he has co-edited English-medium Instruction at Universities: Global Challenges (2013).Aintzane Doiz is Associate Professor in the Department of English and German Studies and Translation and Interpretation at the University of the Basque Country UPV/EHU, Spain. She has co-edited English-medium Instruction at Universities: Global Challenges (2013) and Motivation and Foreign Language Learning: From Theory to Practice (2014).