The meaning of structuralist macroeconomics

Semester started again.  Teaching Intermediate Macroeconomics, and trying to explain to students what is the meaning of structuralist macroeconomics.  The origins of the term are well known, and associated to the development of the theory of inflation by Juan Noyola Vázquez, and other economists at the Economic Commission for Latin America (ECLA). Development implies changes in the structure of production, with an increase of the industrial and service sectors, and a reduction of the agricultural sector, accompanied by significant increases in the levels of labor productivity in all sectors.



As the agricultural sector's size decreases, and its productivity increases, and workers migrate from rural to urban areas, the price of foodstuff goes up, and wage resistance by workers implies that costs increase in general.  In other words, inflation resulted from the transformation of the structure of production.  Hence, the term structuralism, that at the same time, in 1950s, was being popularized by Claude Levi Strauss. Structuralism in Latin America was, as a result, a response to Monetarist views of inflation, and seemed to be aligned with Keynesian economics.



However, there is a more profound meaning to structuralism.  Levi Strauss argued that science proceeds in two ways; it is reductionist when the object of analysis is simple, and it is structuralist when it deals with complex systems.  I tend to believe that a more productive understanding of social sciences should not distinguish between simple and complex phenomena, but emphasize the difference between methodological individualism and structuralism, that is, the presumption that one cannot understand social behavior unless one understands individual behavior, and the counter-argument that individual behavior is by definition constrained by social relations.



In that sense, classical authors (surplus approach), that emphasized the role of class as a central determinant of individual behavior, and Keynes, whose belief in the fallacy of composition implied that the whole is more than the aggregation of its parts, would be structuralists.  For example, it might seem reasonable to assume that an individual worker would accept to work for a lower wage in order to find a job, but if lower wages in the whole system lead to lower demand and a reduction in labor demand, the individual firm reducing wages, and the individual worker accepting it may not solve the problem. One has to understand the functioning of the system as whole first, in order to understand how the individual parts interact.  Or put it simply one needs macro-foundations for microeconomic behavior, not the other way round.



PS: The classic book on macroeconomic structuralism in the anglo-saxon world is Lance Taylor's one (image above).  A simple intro to structuralism in Spanish and Portuguese was the book by Carlos Lessa and Antônio Barros de Castro, the latter sadly passed away last Sunday.

Investigación Económica at 70

Investigación Económica, a journal that has become the most important in México, is turning 70, and Ignacio Perrotini, the editor, is organizing a very interesting conference (disclosure, I'm in the board, and will be at the conference). Jesús Silva Herzog was the founder, and while he cannot be considered a structuralist, it is clear that he was very open to publish the authors that would become central for that school of thought in Latin America, like Juan Noyola Vázquez, the father of the structuralist theory of inflation, Hans Singer, of Prebisch-Singer fame, and Celso Furtado, a central figure in early structuralism and the Economic Commission for Latin America (ECLA) when Prebisch was the Executive Secretary. IE published original and translated articles of the main heterodox economists over the years, and now that it is bilingual it has become a central outlet for high quality heterodox research.  So if you cannot go to the conference, you can check the various issues in the link above.



PS: A partial list of the conference participants includes Amitava Dutt, Anthony Thirlwall, Carlo Panico, Guadalupe Mántey, Tom Palley and Jaime Ros among others.

Rediscovering Prebisch

Yilmaz Akyüz has written a very good post on the boom and bust cycles in the periphery or the less developed countries, resulting from long-term capital inflows and outflows coming from the center or developed countries. He notes that we are entering a fourth cycle since the collapse of Bretton Woods. The basic mechanism can be described as follows, a crisis in the center, which leads to low rates of growth and interest rates, creates the conditions for inflows of capital into the periphery.

The inflows, in turn, lead to a boom in the periphery that goes hand-in-hand with currency appreciation, and in some cases greater indebtedness and asset and commodity price bubbles. The appreciation weakens the external position in the periphery, and eventually something (e.g. higher interest rates in the center, a fall in the price of commodities, etc.) triggers a reversal of capital flows and a crisis in the periphery.

It must be noted that the three previous cycles, to which Akyüz refers, can be also observed in the US economy. The cycles in the periphery have been associated in the US to three debt-led cycles in which the boom was associated to appreciation of the currency, and asset bubbles that allowed consumption to increase, in spite of the stagnation of wages. Arguably, it is the American boom and bust cycles that drive the flows of capital, and the cycles in the periphery. So Raúl Prebisch still has a lot to teach us on the interaction between the center and the periphery!