“…where y T-t measures gross value added growth between t and T (in this case, respectively equal to 2008 and 2013 3 ). This is regressed against a matrix Z of regional growth factors, including a NUTS 3 region's settlement structure, its urbanization economies, accessibility, saving propensity, level of trust, human capital, intensity of knowledge and product innovation activities, and spare productive capacity, as suggested by the main theoretical paradigms behind regional growth theory, namely the theory of bounded rationality and decision-making under conditions of uncertainty (Malmgren, 1961;Simon, 1972) and their application to industrial innovation (Dosi, 1982;Nelson & Winter, 1982) and the cognitive approach to district economies and synergies, which comprises the Italian school (Becattini, 1990), the French "proximity" approach (Gilly & Torre, 2000), the GREMI approach to local innovative environments (Camagni, 1991;Camagni & Maillat, 2006), and Michael Storper's concept of "untraded interdependencies" (Storper, 1995), highlighting agglomeration economies, innovation, knowledge and cultural aspects, in the form of territorial identity (Capello, 2017) as sources of competitiveness.…”