Harry Daniels is the Director of the Centre for Sociocultural and Activity Theory Research (Bath) at The University of Bath, UK. He is also Adjunct Professor, Centre for Learning Research, Griffith University, Brisbane, Australia, and Research Professor, Centre for Human Activity Theory, Kansai University, Osaka, Japan. Harry Daniels is the author of Vygotsky and Pedagogy and editor of An Introduction to Vygotsky and Charting the Agenda: Educational Activity after Vygotsky. His books have been translated into Japanese, Portuguese (in Brazil and Europe), and Spanish. Michael Cole is the University Professor of Communication, Psychology, and Human Development and Director of the Laboratory of Comparative Human Cognition at the University of California, San Diego. He also holds the Sanford Berman Chair of Language, Thought and Communication. He is the author and coauthor of several books and many articles on culture and development. He is a member of the National Academy of Education, the American Academy of Arts and Sciences, and the Russian Academy of Education. James V. Wertsch, Ph.D., is a professor in the Department of Anthropology at Washington University in St. Louis. He holds joint appointments in Education, the Russian Studies Program, and the Program in Philosophy, Neuroscience, and Psychology. He is the director of the McDonnell International Scholars Academy. His topics of study are collective memory and identity, especially in Russia and other countries of the former Soviet Union, as well as in the United States.