Great Depression: Turning Point and Recovery

The two classic competing economic theories of the Great Depression are the Keynesian (demand-driven) and the Monetarist explanation. There are also various heterodox theories that downplay or reject the explanations of the Keynesians and monetarists. The consensus among demand-driven theories is that a large-scale loss of confidence led to a sudden reduction in consumption and investment spending.

Once panic and deflation set in, many people believed they could avoid further losses by keeping clear of the markets. Holding money became profitable as prices dropped lower and a given amount of money bought ever more goods, exacerbating the drop in demand. Monetarists believe that the Great Depression started as an ordinary recession, but the shrinking of the money supply greatly exacerbated the economic situation, causing a recession to descend into the Great Depression.

Money supply decreased considerably between Black Tuesday and the Bank Holiday in March 1933 when there were massive bank runs across the United States.

Crowd gathering at the intersection of Wall Street and Broad Street after the 1929 crash.

Economists and economic historians are almost evenly split as to whether the traditional monetary explanation that monetary forces were the primary cause of the Great Depression is right, or the traditional Keynesian explanation that a fall in autonomous spending, particularly investment, is the primary explanation for the onset of the Great Depression. Today there is also significant academic support for the debt deflation theory and the expectations hypothesis that – building on the monetary explanation of Milton Friedman and Anna Schwartz – add non-monetary explanations.

U.S. Industrial Production, 1928–1939

There is a consensus that the Federal Reserve System should have cut short the process of monetary deflation and banking collapse, by expanding the money supply and acting as lender of last resort. If they had done this, the economic downturn would have been far less severe and much shorter.

Mainstream Explanations

Modern mainstream economists see the reasons in

• A money supply reduction (Monetarists) and therefore a banking crisis, reduction of credit and bankruptcies.
• Insufficient demand from the private sector and insufficient fiscal spending (Keynesians).
• Passage of the Smoot–Hawley Tariff Act exacerbated what otherwise might have been a more "standard" recession (Both Monetarists and Keynesians).
  

Insufficient spending, the money supply reduction, and debt on margin led to falling prices and further bankruptcies (Irving Fisher's debt deflation).

Monetarist View

The monetarist explanation was given by American economists Milton Friedman and Anna J. Schwartz. They argued that the Great Depression was caused by the banking crisis that caused one-third of all banks to vanish, a reduction of bank shareholder wealth and more importantly monetary contraction of 35%, which they called "The Great Contraction". This caused a price drop of 33% (deflation).

By not lowering interest rates, by not increasing the monetary base and by not injecting liquidity into the banking system to prevent it from crumbling, the Federal Reserve passively watched the transformation of a normal recession into the Great Depression. Friedman and Schwartz argued that the downward turn in the economy, starting with the stock market crash, would merely have been an ordinary recession if the Federal Reserve had taken aggressive action. This view was endorsed by Federal Reserve Governor Ben Bernanke in a speech honoring Friedman and Schwartz with this statement:

The Great Depression in the U.S. from a monetary view. Real gross domestic product in 1996-Dollar (blue), price index (red), money supply M2 (green) and number of banks (grey). All data adjusted to 1929 = 100%.

Crowd at New York's American Union Bank during a bank run early in the Great Depression.

The Federal Reserve allowed some large public bank failures – particularly that of the New York Bank of United States – which produced panic and widespread runs on local banks, and the Federal Reserve sat idly by while banks collapsed. Friedman and Schwartz argued that, if the Fed had provided emergency lending to these key banks, or simply bought government bonds on the open market to provide liquidity and increase the quantity of money after the key banks fell, all the rest of the banks would not have fallen after the large ones did, and the money supply would not have fallen as far and as fast as it did.

With significantly less money to go around, businesses could not get new loans and could not even get their old loans renewed, forcing many to stop investing. This interpretation blames the Federal Reserve for inaction, especially the New York branch.

One reason why the Federal Reserve did not act to limit the decline of the money supply was the gold standard. At that time, the amount of credit the Federal Reserve could issue was limited by the Federal Reserve Act, which required 40% gold backing of Federal Reserve Notes issued. By the late 1920s, the Federal Reserve had almost hit the limit of allowable credit that could be backed by the gold in its possession.

This credit was in the form of Federal Reserve demand notes. A "promise of gold" is not as good as "gold in the hand", particularly when they only had enough gold to cover 40% of the Federal Reserve Notes outstanding. During the bank panics, a portion of those demand notes was redeemed for Federal Reserve gold. Since the Federal Reserve had hit its limit on allowable credit, any reduction in gold in its vaults had to be accompanied by a greater reduction in credit. On April 5, 1933, President Roosevelt signed Executive Order 6102 making the private ownership of gold certificates, coins and bullion illegal, reducing the pressure on Federal Reserve gold.

Keynesian View

British economist John Maynard Keynes argued in The General Theory of Employment, Interest and Money that lower aggregate expenditures in the economy contributed to a massive decline in income and to employment that was well below the average. In such a situation, the economy reached equilibrium at low levels of economic activity and high unemployment.

Keynes's basic idea was simple: to keep people fully employed, governments have to run deficits when the economy is slowing, as the private sector would not invest enough to keep production at the normal level and bring the economy out of recession. Keynesian economists called on governments during times of economic crisis to pick up the slack by increasing government spending or cutting taxes.

As the Depression wore on, Franklin D. Roosevelt tried public works, farm subsidies, and other devices to restart the U.S. economy, but never completely gave up trying to balance the budget. According to the Keynesians, this improved the economy, but Roosevelt never spent enough to bring the economy out of recession until the start of World War II.

Debt Deflation

Crowds outside the Bank of United States in New York after its failure in 1931.

U.S. Public and Private Debt as a % of GDP

1. Debt liquidation and distress selling
2. Contraction of the money supply as bank loans are paid off
3. A fall in the level of asset prices
4. A still greater fall in the net worth of businesses, precipitating bankruptcies
5. A fall in profits
6. A reduction in output, in trade and in employment
7. Pessimism and loss of confidence
8. Hoarding of money
9. A fall in nominal interest rates and a rise in deflation adjusted interest rates
   

During the Crash of 1929 preceding the Great Depression, margin requirements were only 10%. Brokerage firms, in other words, would lend $9 for every $1 an investor had deposited. When the market fell, brokers called in these loans, which could not be paid back. Banks began to fail as debtors defaulted on debt and depositors attempted to withdraw their deposits en masse, triggering multiple bank runs. Government guarantees and Federal Reserve banking regulations to prevent such panics were ineffective or not used. Bank failures led to the loss of billions of dollars in assets.

Outstanding debts became heavier, because prices and incomes fell by 20–50% but the debts remained at the same dollar amount. After the panic of 1929 and during the first 10 months of 1930, 744 U.S. banks failed. (In all, 9,000 banks failed during the 1930s). By April 1933, around $7 billion in deposits had been frozen in failed banks or those left unlicensed after the March Bank Holiday. Bank failures snowballed as desperate bankers called in loans that borrowers did not have time or money to repay. With future profits looking poor, capital investment and construction slowed or completely ceased. In the face of bad loans and worsening future prospects, the surviving banks became even more conservative in their lending. Banks built up their capital reserves and made fewer loans, which intensified deflationary pressures. A vicious cycle developed and the downward spiral accelerated.

The liquidation of debt could not keep up with the fall of prices that it caused. The mass effect of the stampede to liquidate increased the value of each dollar owed, relative to the value of declining asset holdings. The very effort of individuals to lessen their burden of debt effectively increased it. Paradoxically, the more the debtors paid, the more they owed. This self-aggravating process turned a 1930 recession into a 1933 great depression.

Fisher's debt-deflation theory initially lacked mainstream influence because of the counter-argument that debt-deflation represented no more than a redistribution from one group (debtors) to another (creditors). Pure re-distributions should have no significant macroeconomic effects.

Building on both the monetary hypothesis of Milton Friedman and Anna Schwartz and the debt deflation hypothesis of Irving Fisher, Ben Bernanke developed an alternative way in which the financial crisis affected output. He builds on Fisher's argument that dramatic declines in the price level and nominal incomes lead to increasing real debt burdens, which in turn leads to debtor insolvency and consequently lowers aggregate demand; a further price level decline would then result in a debt deflationary spiral.

According to Bernanke, a small decline in the price level simply reallocates wealth from debtors to creditors without doing damage to the economy. But when the deflation is severe, falling asset prices along with debtor bankruptcies lead to a decline in the nominal value of assets on bank balance sheets. Banks will react by tightening their credit conditions, which in turn leads to a credit crunch that seriously harms the economy. A credit crunch lowers investment and consumption, which results in declining aggregate demand and additionally contributes to the deflationary spiral.

Expectations Hypothesis

Since economic mainstream turned to the new neoclassical synthesis, expectations are a central element of macroeconomic models. According to Peter Temin, Barry Wigmore, Gauti B. Eggertsson and Christina Romer, the key to recovery and to ending the Great Depression was brought about by a successful management of public expectations. The thesis is based on the observation that after years of deflation and a very severe recession important economic indicators turned positive in March 1933 when Franklin D. Roosevelt took office. Consumer prices turned from deflation to a mild inflation, industrial production bottomed out in March 1933, and investment doubled in 1933 with a turnaround in March 1933.

There were no monetary forces to explain that turnaround. Money supply was still falling and short-term interest rates remained close to zero. Before March 1933, people expected further deflation and a recession so that even interest rates at zero did not stimulate investment. But when Roosevelt announced major regime changes, people began to expect inflation and an economic expansion. With these positive expectations, interest rates at zero began to stimulate investment just as they were expected to do.

Roosevelt's fiscal and monetary policy regime change helped make his policy objectives credible. The expectation of higher future income and higher future inflation stimulated demand and investment. The analysis suggests that the elimination of the policy dogmas of the gold standard, a balanced budget in times of crisis and small government led endogenously to a large shift in expectation that accounts for about 70–80% of the recovery of output and prices from 1933 to 1937. If the regime change had not happened and the Hoover policy had continued, the economy would have continued its free fall in 1933, and output would have been 30% lower in 1937 than in 1933.

The recession of 1937–1938, which slowed down economic recovery from the Great Depression, is explained by fears of the population that the moderate tightening of the monetary and fiscal policy in 1937 were first steps to a restoration of the pre-1933 policy regime.

Common Position

There is common consensus among economists today that the government and the central bank should work to keep the interconnected macroeconomic aggregates of gross domestic product and money supply on a stable growth path. When threatened by expectations of a depression, central banks should expand liquidity in the banking system and the government should cut taxes and accelerate spending in order to prevent a collapse in money supply and aggregate demand.

At the beginning of the Great Depression, most economists believed in Say's law and the equilibrating powers of the market, and failed to understand the severity of the Depression. Outright leave-it-alone liquidationism was a common position, and was universally held by Austrian School economists. The liquidationist position held that a depression worked to liquidate failed businesses and investments that had been made obsolete by technological development – releasing factors of production (capital and labor) to be redeployed in other more productive sectors of the dynamic economy. They argued that even if self-adjustment of the economy caused mass bankruptcies, it was still the best course.

Economists like Barry Eichengreen and J. Bradford DeLong note that President Herbert Hoover tried to keep the federal budget balanced until 1932, when he lost confidence in his Secretary of the Treasury Andrew Mellon and replaced him. An increasingly common view among economic historians is that the adherence of many Federal Reserve policymakers to the liquidationist position led to disastrous consequences.

Unlike what liquidationists expected, a large proportion of the capital stock was not redeployed but vanished during the first years of the Great Depression. According to a study by Olivier Blanchard and Lawrence Summers, the recession caused a drop of net capital accumulation to pre-1924 levels by 1933. Milton Friedman called leave-it-alone liquidationism "dangerous nonsense". He wrote:

Heterodox Theories

Austrian School

Two prominent theorists in the Austrian School on the Great Depression include Austrian economist Friedrich Hayek and American economist Murray Rothbard, who wrote America's Great Depression (1963). In their view, much like the monetarists, the Federal Reserve (created in 1913) shoulders much of the blame; however, unlike the Monetarists, they argue that the key cause of the Depression was the expansion of the money supply in the 1920s which led to an unsustainable credit-driven boom.

In the Austrian view, it was this inflation of the money supply that led to an unsustainable boom in both asset prices (stocks and bonds) and capital goods. Therefore, by the time the Federal Reserve tightened in 1928 it was far too late to prevent an economic contraction. In February 1929 Hayek published a paper predicting the Federal Reserve's actions would lead to a crisis starting in the stock and credit markets.

According to Rothbard, the government support for failed enterprises and efforts to keep wages above their market values actually prolonged the Depression. Unlike Rothbard, after 1970 Hayek believed that the Federal Reserve had further contributed to the problems of the Depression by permitting the money supply to shrink during the earliest years of the Depression. However, during the Depression (in 1932 and in 1934) Hayek had criticized both the Federal Reserve and the Bank of England for not taking a more contractionary stance.

Hans Sennholz argued that most boom and busts that plagued the American economy, such as those in 1819–20, 1839–1843, 1857–1860, 1873–1878, 1893–1897, and 1920–21, were generated by government creating a boom through easy money and credit, which was soon followed by the inevitable bust.

Ludwig von Mises wrote in the 1930s: "Credit expansion cannot increase the supply of real goods. It merely brings about a rearrangement. It diverts capital investment away from the course prescribed by the state of economic wealth and market conditions. It causes production to pursue paths which it would not follow unless the economy were to acquire an increase in material goods. As a result, the upswing lacks a solid base. It is not real prosperity. It is illusory prosperity. It did not develop from an increase in economic wealth, i.e. the accumulation of savings made available for productive investment. Rather, it arose because the credit expansion created the illusion of such an increase. Sooner or later, it must become apparent that this economic situation is built on sand".

Inequality

Power farming displaces tenants from the land in the western dry cotton area. Childress County, Texas, 1938

Two economists of the 1920s, Waddill Catchings and William Trufant Foster, popularized a theory that influenced many policy makers, including Herbert Hoover, Henry A. Wallace, Paul Douglas, and Marriner Eccles. It held the economy produced more than it consumed, because the consumers did not have enough income. Thus the unequal distribution of wealth throughout the 1920s caused the Great Depression.

According to this view, the root cause of the Great Depression was a global over-investment in heavy industry capacity compared to wages and earnings from independent businesses, such as farms. The proposed solution was for the government to pump money into the consumers' pockets. That is, it must redistribute purchasing power, maintaining the industrial base, and re-inflating prices and wages to force as much of the inflationary increase in purchasing power into consumer spending. The economy was overbuilt, and new factories were not needed. Foster and Catchings recommended federal and state governments to start large construction projects, a program followed by Hoover and Roosevelt.

Productivity Shock

The first three decades of the 20th century saw economic output surge with electrification, mass production, and motorized farm machinery, and because of the rapid growth in productivity there was a lot of excess production capacity and the work week was being reduced. The dramatic rise in productivity of major industries in the U.S. and the effects of productivity on output, wages and the workweek are discussed by Spurgeon Bell in his book Productivity, Wages, and National Income (1940).