Jaume Bacardit
ASAP, School of Computer Science and IT,
University of Nottingham
Jubilee Campus, Wollaton Road, Nottingham, UK
e-mail: Jaume Bacardit

Ester Bernadó-Mansilla
Computer Engineering Department,
Enginyeria i Arquitectura La Salle, Ramon Llull University
Quatre Camins 2, 08022, Barcelona, Spain
e-mail: Ester Bernadó-Mansilla

Martin V. Butz
Department of Cognitive Psychology III,
University of Würzburg
Röntgenring 11, 97070 Würzburg, Germany
e-mail: Martin V. Butz