Vivian Cook is Emeritus Professor, Newcastle University, UK. He has been researching in the fields of second language acquisition and writing systems for over 45 years and was founding President of the European Second Language Association (EUROSLA).David Singleton is Professor, University of Pannonia, Hungary and Fellow Emeritus, Trinity College, Dublin, Ireland. He has published widely on second language acquisition, multilingualism and lexicology and is the series editor for the SLA series published by Multilingual Matters.