Abstract
This Special Issue of Psychologica Belgica is a Festschrift in honour of Géry van Outryve d’Ydewalle and in celebration of his research. It contains nine papers, six of which are directly associated with the symposium organised on his behalf on September 7th 2012, in the Royal Academy building in Brussels. We would like to thank the authors for their valuable ontributions, as well as Etienne Quertemont, editor-in-chief of Psychologica Belgica, for enthusiastically supporting our initiative.