Sargent, Prescott, Taylor and Kydland on the Global Financial Crisis and the Great Recession

Many of the key issues about what modern macroeconomics has to say on global financial crises are discussed in a 2010 interview with Thomas Sargent where he says that two polar models of bank crises and what government lender-of-last-resort and deposit insurance do to arrest or promote them were used to understand the GFC. They are polar models because:

  • in the Diamond-Dybvig and Bryant model of banking runs, deposit insurance and other bailouts are purely a good thing stopping panic-induced bank runs from ever starting; and

  • In the Kareken and Wallace model, deposit insurance by governments and the lender-of-last-resort function of a central bank are purely a bad thing because moral hazard encourages risk taking unless there is regulation or there is proper surveillance and accurate risk-based pricing of the deposit insurance.

In the Diamond-Dybvig and Bryant model, if there is government-supplied deposit insurance, people do not initiate bank runs because they trust their deposits to be safe. There is no cost to the government for offering the deposit insurance because there are no bank runs! A major free lunch.

Tom Sargent considers that the Bryant-Diamond-Dybvig model has been very influential, in general, and among policy makers in 2008, in particular.

Governments saw Bryant-Diamond-Dybvig bank runs everywhere. The logic of this model persuaded many governments that if they could arrest the actual or potential runs by convincing creditors that their loans were insured, that could be done at little or no eventual cost to taxpayers.

In 2008, the Australian and New Zealand governments announced emergency bank deposit insurance guarantees. In Bryant-Diamond-Dybvig style bank panics, these guarantees ward off the bank run and thus should cost nothing fiscally because the deposit insurance is not called upon. These guarantees and lender of last resort function were seen as key stabilising measures. These guarantees were called upon in NZ to the tune of $2 billion.

  • The Diamond-Dybvig and Bryant model makes you sensitive to runs and optimistic about the ability of deposit insurance to cure them.
  • The Kareken and Wallace model’s prediction is that if a government sets up deposit insurance and doesn’t regulate bank portfolios to prevent them from taking too much risk, the government is setting the stage for a financial crisis.
  • The Kareken-Wallace model makes you very cautious about lender-of-last-resort facilities and very sensitive to the risk-taking activities of banks.

Kareken and Wallace called for much higher capital reserves for banks and more regulation to avoid future crises. This is not a new idea. Sam Peltzman in the mid-1960s found that U.S. banks in the 1930s halved their capital ratios after the introduction of federal deposit insurance. FDR was initially opposed to deposit insurance because it would encourage greater risk taking by banks.

Sargent also said that it is just wrong to say that the GFC caught modern macroeconomists by surprise: Allen and Gale’s 2007 book Understanding Financial Crises compiles many of the dynamic models of the causes of financial crises and government policies that can arrest or ignite them.

Front Cover

Stern and Feldman’s Too Big to Fail uses insights from the formal economic literature to warn in 2004 about the time bomb for a financial crisis set by current banking regulations and government promises.

In Great Depressions of the Twentieth Century (2007) written by a team of 24 economists, Kehoe and Prescott and others concluded that bad government policies are responsible for causing depressions. In particular, while different sorts of shocks can lead to ordinary business cycle downturns, it is overreactions by governments that can prolong and deepen the downturn, turning it into a depression. Depressions and great recessions, such as currently the case in the USA, are caused by crisis management policies that turn garden-variety recessions into something much worse. Crisis management policies distort the incentives to hire and invest and reduce competition and efficiency.

As an example, one in three unemployed in the EU are Spanish mainly because of Spanish employment protection laws.

Cahuc et al. 2012 estimated that Spanish unemployment would be 45% lower if Spain adopted the less strict French laws! About ten years ago, under French employment law, the contestants on the French version of Survivor sued successfully for wrongful dismissal by the Tribal Council! French workers cannot be laid off just to improve business profits. They can be laid off to avoid bankruptcy.

John Taylor argues that we should consider macroeconomic performance since the 1960:

  • There was a move toward more discretionary policies in the 1960s and 1970s;
  • A move to more rules-based policies in the 1980s and 1990s; and
  • Back again toward discretion in recent years.

These policy swings are correlated with economic performance—unemployment, inflation, economic and financial stability, the frequency and depths of recessions, the length and strength of recoveries. Less predictable, more interventionist, and more fine-tuning type macroeconomic policies have caused, deepened and prolonged the current recession.

Finn Kydland considers fiscal policy to be at the heart of current problems. Instead of restructuring and investing more prudently, Western countries faced with budget shortfalls will seek to increase taxes:

  • The U.S. economy isn’t recovering from the Great Recession of 2008-2009 with the anticipated strength.
  • A widespread conjecture is that this weakness can be traced to perceptions of an imminent switch to a regime of higher taxes.
  • The fiscal sentiment hypothesis can account for a significant fraction of the decline in investment and labor supply in the aftermath of the Great Recession, relative to their pre-recession trends.
  • The perceived higher taxes must fall almost exclusively on capital income. People must suspect that the tax structure that will be implemented to address large fiscal imbalances will be far from optimal.

Those who disagree with the policy-based explanation for the depth and length of the Great Recession must explain why the US and EU economies have not recovered after the worst of the global financial crisis passed in November 2008?! The case that there were intervening government policies that prolonged and deepened each national recession is strong.

1 Comment (+add yours?)

  1. Trackback: France, here the New Zealand labour market comes! The Employment Court’s long march to re-regulate | Utopia - you are standing in it!

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