Mario Menegatti Dipartimento di Economia, Università di Parma, Italy   via Kennedy 6 Parma, I-43125 Italy   mario.menegatti@unipr.it   http://economia.unipr.it/docenti/MENEGATTI           JEL Areas: D8 : Information, Knowledge, and Uncertainty: General E2 : Macroeconomics: Consumption, Saving, Production, Employment, and Investment: General (includes Measurement and Data)