Please read the following excerpt from Ben Bernanke's The Great Moderation, and answer the questions in the
Question:
Please read the following excerpt from Ben Bernanke's "The Great Moderation," and answer the questions in the next section.
Ben Bernanke- The Great Moderation. February 20, 2004
One of the most striking features of the economic landscape over the past twenty years or so has been a substantial decline in macroeconomic volatility. In a recent article, Olivier Blanchard and John Simon (2001) documented that the variability of quarterly growth in real output (as measured by its standard deviation) has declined by half since the mid-1980s, while the variability of quarterly inflation has declined by about two thirds.1Links to an external site.Several writers on the topic have dubbed this remarkable decline in the variability of both output and inflation "the Great Moderation." Similar declines in the volatility of output and inflation occurred at about the same time in other major industrial countries, with the recent exception of Japan, a country that has faced a distinctive set of economic problems in the past decade.
Reduced macroeconomic volatility has numerous benefits. Lower volatility of inflation improves market functioning, makes economic planning easier, and reduces the resources devoted to hedging inflation risks. Lower volatility of output tends to imply more stable employment and a reduction in the extent of economic uncertainty confronting households and firms. The reduction in the volatility of output is also closely associated with the fact that recessions have become less frequent and less severe.2Links to an external site.
Why has macroeconomic volatility declined? Three types of explanations have been suggested for this dramatic change; for brevity, I will refer to these classes of explanations asstructural change, improved macroeconomic policies, and good luck. Explanations focusing on structural change suggest that changes in economic institutions, technology, business practices, or other structural features of the economy have improved the ability of the economy to absorb shocks. Some economists have argued, for example, that improved management of business inventories, made possible by advances in computation and communication, has reduced the amplitude of fluctuations in inventory stocks, which in earlier decades played an important role in cyclical fluctuations.3Links to an external site.The increased depth and sophistication of financial markets, deregulation in many industries, the shift away from manufacturing toward services, and increased openness to trade and international capital flows are other examples of structural changes that may have increased macroeconomic flexibility and stability.
The second class of explanations focuses on the arguablyimproved performance of macroeconomic policies, particularly monetary policy. The historical pattern of changes in the volatilities of output growth and inflation gives some credence to the idea that better monetary policy may have been a major contributor to increased economic stability. As Blanchard and Simon (2001) show, output volatility and inflation volatility have had a strong tendency to move together, both in the United States and other industrial countries. In particular, output volatility in the United States, at a high level in the immediate postwar era, declined significantly between 1955 and 1970, a period in which inflation volatility was low. Both output volatility and inflation volatility rose significantly in the 1970s and early 1980s and, as I have noted, both fell sharply after about 1984. Economists generally agree that the 1970s, the period of highest volatility in both output and inflation, was also a period in which monetary policy performed quite poorly, relative to both earlier and later periods (Romer and Romer, 2002).4Links to an external site.Few disagree that monetary policy has played a large part in stabilizing inflation, and so the fact that output volatility has declined in parallel with inflation volatility, both in the United States and abroad, suggests that monetary policy may have helped moderate the variability of output as well.
The third class of explanations suggests that the Great Moderation did not result primarily from changes in the structure of the economy or improvements in policymaking but occurred because the shocks hitting the economy became smaller and more infrequent. In other words, the reduction in macroeconomic volatility we have lately enjoyed is largely the result ofgood luck, not an intrinsically more stable economy or better policies. Several prominent studies using distinct empirical approaches have provided support for the good-luck hypothesis (Ahmed, Levin, and Wilson, 2002; Stock and Watson, 2003).
Explanations of complicated phenomena are rarely clear cut and simple, and each of the three classes of explanations I have described probably contains elements of truth. Nevertheless, sorting out the relative importance of these explanations is of more than purely historical interest. Notably, if the Great Moderation was largely the result of good luck rather than a more stable economy or better policies, then we have no particular reason to expect the relatively benign economic environment of the past twenty years to continue. Indeed, if the good-luck hypothesis is true, it is entirely possible that the variability of output growth and inflation in the United States may, at some point, return to the levels of the 1970s. If instead the Great Moderation was the result of structural change or improved policymaking, then the increase in stability should be more likely to persist, assuming of course that policymakers do not forget the lessons of history.
My view is that improvements in monetary policy, though certainly not the only factor, have probably been an important source of the Great Moderation. In particular, I am not convinced that the decline in macroeconomic volatility of the past two decades wasprimarilythe result of good luck, as some have argued, though I am sure good luck had its part to play as well.
Topic: How does Bernanke make sense of lower economic volatility? Is his position convincing? Please answer the topic question specifically after finish reading!
Fundamentals of Financial Accounting
ISBN: 978-0078025372
4th edition
Authors: Fred Phillips, Robert Libby, Patricia Libby