Eugenio studied Psychology in the University of Deusto (Bilbao). He spent almost two years at the Artificial Intelligence Department of Labein Laboratories in Bilbao, where he worked on a project which combined Machine Learning inductive techniques with theories from the Psychology of Learning. He completed his PhD thesis at the Computing Science Department at the University of Aberdeen (partly supervised by the Psychology Department). The thesis deals with psychological and computational aspects of taxonomic revision. Then he worked for over two years as a Research Fellow in the Psychology Department in Aberdeen, for COGNATE: an ESRC funded cognitive engineering project related to medical decision making and decision support in neonatal intensive care. Before he joined the CSR, he worked at CHIME (UCL) on CADMIUM II: Computer Decision Making in Image Understanding in Medicine.