Frank Fischer is Professor of Educational Psychology and Educational Sciences in the Department of Psychology and Director of the Munich Center of the Learning Sciences (MCLS) at Ludwig Maximilian University, Munich, Germany.

Cindy E. Hmelo-Silver is Barbara B. Jacobs Chair of Education and Technology and Professor of Learning Sciences at Indiana University Bloomington, USA.

Susan R. Goldman is Distinguished Professor of Psychology and Education and Co-Director of the Learning Sciences Research Institute at the University of Illinois at Chicago, USA.

Peter Reimann is Professor of Education at the CoCo Research Centre and Co-Director of the Centre for Research on Learning & Innovation (CRLI) at the University of Sydney, Australia.