Project financed by the European Commission, DG Research Improving the Human Potential and the Socio-Economic Knowledge Base Programme Kiel Institute of World Economics Institute for New Technologies, United Nations University University of Oxford University of Rome, La Sepienza Warwick Business School, University of Warwick Bernardo M aggi, University of Roma “La Sapienza” Stefania P.S. Rossie, University of Cagliari, Italy and the University of Vienna NO. 03-35