Jean Piaget and Lev Vygotsky are arguably the two most influential figures in psychological research. Although born in the same year of 1896, it is only over the last decade or so that the work of Vygotsky has rivalled that of Piaget in importance in the Western world. This collection of original contributions by leading researchers celebrates the 1996 centenary of the births of the two most seminal figures in education and developmental psychology...