The paper shows that the co-movements of optimal price and output in a monopolistic market can be a case of spurious correlation, price and quantity variations being affect by the degree of uncertainty in the consumers' incomes. The pattern of price and quantity changes depends on the shape of...

Income polarization and industry concentration (especially in sectors where price competition is supposed to be stiffer) are both generally deemed to be higher in the United States than in the European Union. In this note we provide an interpretation of this evidence by establishing a...