Oreste Napolitano Department of Economic Studies, University of Naples Parthenope   via medina 40 Napoli, NA 80133 Italy   napolitano@uniparthenope.it   http://economia.uniparthenope.it/ise/napolitano/index.htm           JEL Areas: R2 : Urban, Rural, and Regional Economics: Household Analysis: General O1 : Economic Development: General