Harry Daniels is Professor of Education at the University of Bath, UK. He is also Research Programme Director at the Centre for Sociocultural and Activity Theory Research.

Anne Edwards is Professor of Education and Director of Research at the Oxford University Department of Education, UK.

Yrjö Engeström is Professor at the Center for Activity, Development and Learning (CRADLE) at the University of Helsinki, Finland.

Tony Gallagher is Professor at the Department of Education, Queen's University Belfast, UK.

Sten R. Ludvigsen is a Professor and Director at InterMedia, University of Oslo, Norway.