Life expectancy and income among the first countries to begin health transitions -- Which countries should be studied? -- A colonizer and the country colonized : Japan and Korea -- Very low income is not a barrier : Sri Lanka -- Two neighbors : Panama and Costa Rica -- Capitalism and communism,...

This thesis investigates the consequences of model uncertainty and persistence in consumption habits and price-setting behaviour in a New Keynesian model.As the decision of a central bank is made in an uncertain environment, the analysis of uncertainty is essential in monetary policy models. In...