Allan Feldman is Professor of Science Education and Teacher Education in the Teaching and Learning Department of the College of Education, University of South Florida, USA.

Herbert Altrichter is Full Professor of Education and Educational Psychology and Director of the Linz School of Education at Johannes Kepler University, Austria.

Peter Posch was Professor of Education at the Institute of Education, University of Klagenfurt, Austria, until his retirement.

Bridget Somekh was Professor of Educational Research at Manchester Metropolitan University, UK, and is now Adjunct Professor at the University of Canterbury, New Zealand.