STAFFORD A. GRIFFITH is Professor of Research, Measurement and Evaluation, Director of the School of Education, and Deputy Dean of the Faculty of Humanities and Education, University of the West In...voir plusSTAFFORD A. GRIFFITH is Professor of Research, Measurement and Evaluation, Director of the School of Education, and Deputy Dean of the Faculty of Humanities and Education, University of the West Indies, Mona, Jamaica.voir moins