Back to the front: the debate on the new macroeconomic consensus in the post crisis
The 1970s were marked by a deep split in macroeconomic research. The pax signed around the neoclassical synthesis gave place to an intense substantive and methodological dispute, opposing traditional Keynesians and new classics. Robert Lucas was one of the main important architects of the new methodological standard. In the 1980s, the Lucas’s standard was incorporated into the real business cycle research and reached its peak. In that same decade, traditional Keynesianism would reincarnate in a body of microfounded musculature, claiming the presence of premises such as price rigidity. When macroeconomists returned to grafting Keynesian assumptions into models developed by theorists of real business cycles, macroeconomic research converged, once again, on a common agenda. Once the new consensus was proclaimed, both sides were able to claim victory. In the 2000s, modern macroeconomics reaped the laurels of Great Moderation and boasted of shaping economic policy. But it was not long before the open flanks of the new consensus were exposed. After surprising economists, the financial crisis of 2008 shook the reputation of economics and has led to the emergence of an intense debate about that consensus. At the heart of the criticism is the simplicity with which the models of the new synthesis - the so-called DSGE - deal with the credit market and the connections between finance and the real economy, something that even the leaders of the new consensus are not reluctant to recognize. Some criticisms are aimed at rebuilding the discipline. In the articles written by Joseph Stiglitz, the criticism even condemns DSGE models in the same terms that the new classics condemned the new neoclassical synthesis. Others seek a compromise. Recognizing the importance of DSGE models, they call for a shift in the incentives of the macroeconomist’s profession – allegedly unfavorable incentives to the development of alternative models for understanding the economic phenomenon. On the opposite side of the debate, frontier research is evoked to show that, in recent years, criticism has found acceptance, resulting in the emergence of models with heterogeneous agents and financial frictions, without discarding the use of DSGE clothing. The important role that DSGE models played in facing the crisis is also advocated, as opposed to the argument that macroeconomists did not find answers to deal with the consequences of 2008.