Research Topics

Using the model proposed in Krugman and Taylor’s “Contractionary effects of devaluation” (1978), we examine the macroeconomic effects of shocks to foreign prices. We show that these shocks can be contractionary for two reasons: (i) because they imply a loss of income if an economy has a trade deficit or import prices increase proportionally more than export prices; (ii) because there is a redistribution of income from wages to profits and rent, which leads to a decrease in consumption and output (as the wage earner's propensity to consume is higher than those of profit earners and rentiers). An endogenous reaction of nominal wages to the increase in the price level might lead to even higher increases in prices, but mitigates the negative macroeconomic effects of the foreign price shocks because it reduces their negative distributional effects. If the proportional increase in nominal wages is higher than that of domestic prices, the distributional effect becomes positive. The opposite is the case with markups. If they increase in reaction to higher prices, they contribute to further price increases but they also exacerbate the negative distributional effects. The paper also provides an analytical solution for a general case of the model of Krugman and Taylor.

Explosion in the 1990s versus Implosion in the 2000s

Orthodox and heterodox theories of financial crises are hereby compared from a theoretical viewpoint, with emphasis on their genesis. The former view (represented by the fourth-generation models of Paul Krugman) reflects the neoclassical vision whereby turbulence is an exception; the latter insight (represented by the theories of Hyman P. Minsky) validates and extends John Maynard Keynes’s vision, since it is related to a modern financial world. The result of this theoretical exercise is that Minsky’s vision represents a superior explanation of financial crises and current events in financial systems because it considers the causes of financial crises as endogenous to the system. Crucial facts in relevant financial crises are mentioned in section 1, as an introduction; the orthodox models of financial crises are described in section 2; the heterodox models of financial crises are outlined in section 3; the main similarities and differences between orthodox and heterodox models of financial crises are identified in section 4; and conclusions based on the information provided by the previous section are outlined in section 5. References are listed at the end of the paper.