DAVID D. MALVERN is Professor of Education, University of Reading, UK. He has been Research Officer at the Royal Society, Visiting Professor Department of Educational Psychology, McGill University, and European Union and British Council Consultant. BRIAN J. RICHARDS is Professor of Education, University of Reading, UK, and for seventeen years was an associate editor of the Journal of Child Language NGONI CHIPERE is Lecturer in Language Arts, University of the West Indies in Barbados, and author of Understanding Complex Sentences: Native Speaker Variation in Syntactic Competence published by Palgrave in 2004. PILAR DURÁN gained a PhD at Boston University and was Research Officer, University of Reading, UK, before becoming Business Development Manager at Eurobios.