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Why The "Output Gap" Inflation Model May Be Fatally Flawed

Tyler Durden's picture




Could it be that the fundamental economic indicator that is gospel not only to Goldman Sachs, but to Ben Bernanke in estimating and determining monetary policy, the output gap, provides a flawed reading of the economy? As a reminder, Ben Bernanke has repeatedly expressed little regard for either commodity inflation or US dollar exchange as having an impact on overall US inflation. As Askari and Hochain state: "according to [Bernanke's] theory, inflation was related only to the output gap. As long
as the output gap was negative, that is, if actual gross domestic product was below potential GDP, the economy was at no risk of inflation.
Hence, he
argued that the central bank had to adopt an aggressive money policy until the
output gap closed. Such is the policy prescription from what is called the
Taylor Rule or the Phillips Curve. Because potential GDP is not a measured
macroeconomic variable, it can be estimated in millions of ways. There are,
therefore, millions of ways for estimating an output gap, making the concept
difficult to use as a policy tool." The problem with these millions of estimations, is that especially courtesy of the Greenspan created bubble over the past 20 years, the American economy is, ironically, not a true representation of itself. And thus, the output gap estimates need to be normalized for a "bubble free" GDP environment. It is precisely this issue that none other than the St. Louis Fed addresses in its latest paper: "Has the Recent Real Estate Bubble Biased the Output Gap?" The conclusion is startling: based on a production function output gap normalization (an approach "based on a relation between available productive inputs (such as capital and labor), their current utilization rates, and aggregate production"), Bernanke could be fatally wrong about the economy's "capacity for inflation" courtesy of the CBO's overestimated output gap, and that his loose monetary policy could end up being a disastrous precursor to rampant (and not distant) hyperinflation, due to his blatant avoidance of simple logic when interpreting the economic output gap.

Some preliminary observations from St Louis:

The output gap is the difference between actual gross domestic product (GDP) and the economy’s potential output at a given moment in time. The Congressional Budget Office (CBO) estimates a very large and negative output gap for 2009’s second quarter: –6.7 percent. Because this (predicted) output gap is so large, several analysts have concluded that monetary policy can remain very accommodative without fear of inflationary repercussions. We argue instead that standard output gap measures may be severely biased by the bubble in real estate prices that, according to many, started around 2002 and burst in 2007.

Why is the output gap such a tricky concept?

One difficulty in estimating output gaps is that a key component—potential output—is defined as the GDP attainable when the economy is operating at a high rate of resource use. Because economies are subject to the effects of recurrent external forces, actual GDP is typically not at its full potential. This implies that we cannot really ever observe potential output and, hence, it must be approximated. The first method to do this consists of identifying potential output according to long-term trends in GDP. The second method—the production function approach—is based on a relation between available productive inputs (such as capital and labor), their current utilization rates, and aggregate production.

Here is the core of the issue, so obvious, that even first year investment banking analysts are taught to account for it, yet the Chairman of the Federal Reserve, due to the bubble of his own creation, is unable to grasp it.

Components of existing statistical methods to estimate potential output are typically subject to inertia. Hence, if the recent real estate bubble increased GDP and productive inputs to levels higher than what would be expected by economic fundamentals, then it is likely that potential output estimates will also be beyond what economic fundamentals would imply. Thus, these estimates would be biased. One way to better understand how bubbles affect key macroeconomic indicators is to consider that high growth in real estate prices may affect GDP not only through the increase in the value of residential services, but also through its indirect impact on higher than-usual growth in (i) the finance and insurance sector and (ii) consumption—the latter caused by perceived increases in personal wealth.

And the renormalization exercise:

Knowing the exact rate at which the economy would have grown without a bubble might be impossible. Nevertheless, we construct two estimates of potential output that we consider reasonable and “bubble-free.” These estimates are based on the long-run trends of GDP and capital stock up to 2002, before the bubble began. We call the difference between our artificial constructs and actual GDP our “bubble-free” output gaps. Our results are summarized in the chart.

Our output gap estimate based on GDP growth trends during the 50 years preceding the real estate bubble yields an output gap more negative than the CBO’s estimate. Why the difference? Growth during 2002-09 was relatively weak compared with the past 50 years. Notably, this estimate also has the undesirable characteristic of being sensitive to the period chosen to estimate GDP growth trends. In contrast, the output gap based on the production function approach, after adjusting the value of inputs for possible bubbles, results in an output gap less negative (and positive through 2008) than the CBO’s estimate. Hence, two reasonable methods yield opposite conclusions about the output gap. At the very least, we can say that the confidence intervals for the output gap seem to be wide.

And the sobering conclusion:

Our results add to a long list of practical problems in precisely measuring the output gap. We offer a word of caution to policymakers: Policies based on point estimates of the output gap may not rest on solid ground.

Keep in mind, this is not the conclusion of some liberal third party think tank: this is the Fed itself opining on the bubble of its own creation. And when the Fed says that Bernanke's $1.7 trillion policy of Quantitative Easing, almost guaranteed to be soon followed by a sequel (and another, and another), could have been based on a pro-cyclical reading of patterns, which in turn merely perpetuate the bubble, it is time for the lunatics in the Fed to finally take their feet of the printing machine accelerators and consider  the collision course they have set the US economy on. It is also time for Ben to reconsider his assessment of whether or not his actions over the past year have thrown us into yet another bubble. It would appear that we never even emerged from the original one.

Full St. Louis Fed paper.

 




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Sat, 11/21/2009 - 16:16 | Link to Comment Sancho Panza
Sancho Panza's picture

"There is no means of avoiding a final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as a result of a voluntary abandonment of further credit expansion or later as a final and total catastrophe of the currency system involved."     - Ludwig Von Mises

Depression or hyperinflation.  Your pick, Bernanke.

Sat, 11/21/2009 - 17:09 | Link to Comment Hansel
Hansel's picture

Depression and hyperinflation.  With money printing, the real economy will still suck but the historical unit of measure will be fubar.

Sat, 11/21/2009 - 17:36 | Link to Comment Anonymous
Sat, 11/21/2009 - 18:44 | Link to Comment Sancho Panza
Sancho Panza's picture

"It won't get better until banks extend credit."

Where do banks get credit?  Where does the government get credit for the FHA loans? 

So far, Bernanke has avoided a depression by printing more money.  The moment he stops printing, we will fall into a depression.  If he does not stop printing, we will eventually have a currency crisis.

I wish we would just take our medicine today.

To complete the thought here, I have been questioning in my mind whether there could be some middle way between depression and hyperinflation.  Some purgatory of Japan-style lost decade.  Japan's current problems argue against a possibility of a sustainable middle way.  And the article above, about the inadequacy of the GDP output-gap model, further argues against a possible middle way.  There really are only two choices when a society falls this deeply into debt.  I challenge anyone to find a historical example that would suggest otherwise.  I would be thrilled to learn of one.

Sat, 11/21/2009 - 20:13 | Link to Comment Anonymous
Sat, 11/21/2009 - 21:42 | Link to Comment Anonymous
Sat, 11/21/2009 - 21:47 | Link to Comment lookma
lookma's picture

It won't get better until banks extend credit.

Good thing interest doesn't grow exponentially.  Oh wait.

Sat, 11/21/2009 - 16:21 | Link to Comment Great Depressio...
Great Depression Trader's picture

I PASSED THE CALIFORNIA BAR EXAM! 1ST TIME PASSER! WOOOHOOOOOOOOOOOOOOOOOOOOOOO

Sat, 11/21/2009 - 16:30 | Link to Comment Careless Whisper
Careless Whisper's picture

props to you. now go sue someone while there's still some solvent people in cali.

 

Sat, 11/21/2009 - 17:14 | Link to Comment onelight
onelight's picture

hilarious....bon mots

Sat, 11/21/2009 - 17:40 | Link to Comment Anonymous
Sat, 11/21/2009 - 20:10 | Link to Comment Great Depressio...
Great Depression Trader's picture

From the Cal State Bar:

The State Bar of California's Committee of Bar Examiners reported today that 56.4 percent of the applicants passed the July 2009 General Bar Examination (GBX). If the 4,888 people who passed the July 2009 exam satisfy other requirements for admission, they will become members of the State Bar.

 

Preliminary statistical analyses show that of the 8,667 applicants who took the GBX, 71.0 percent were first-time takers. The passing rate for 6,152 first-time applicants was 70.0 percent overall. The passing rate for the 2,515 applicants repeating the examination was 22.0 percent overall.

You can kiss my ass anonymous prick. This bar exam had the average pass rate for Cal in the past 10yrs. I know tons of people that failed and will join the "repeater" group and will have to pray to ever pass.

Sat, 11/21/2009 - 21:24 | Link to Comment Anonymous
Sat, 11/21/2009 - 22:43 | Link to Comment Great Depressio...
Great Depression Trader's picture

Hahahahaha. Troll= not worth responding to anymore. Have a nice day.

Sat, 11/21/2009 - 18:13 | Link to Comment jm
jm's picture

Congratulations.  Always good to hear some good news.

Sat, 11/21/2009 - 20:41 | Link to Comment Orly
Orly's picture

Congratulations!

Sat, 11/21/2009 - 16:34 | Link to Comment Careless Whisper
Careless Whisper's picture

"It is also time for Ben to reconsider his assessment of whether or not his actions over the past year have thrown us into yet another bubble."

correction: it is also time for the Senate to reconsider the re-appointment of helicopter Ben.

Peter Schiff had some comments on Benny and Timmay last night:

http://www.youtube.com/watch?v=wa7AT40sRHM

 

Sat, 11/21/2009 - 16:39 | Link to Comment SDRII
SDRII's picture

Hugh Hendry has made this a central tenet of his theiss as have many others. It's not rocket science: $5T of GDP "growth in a decade with no wage growth and no job creation? Deep down in those places Bernanke doesn't talk about, he acknowledges the lie as truth, but believes the supremecy of the money machines is always enough to lift the tide just enough to support asset prices but preserve the debt servitude. It is not a coincidence that Geithners script from the very start always made reference to not losing the political will to "stay the course."

Sat, 11/21/2009 - 16:53 | Link to Comment Tommy
Tommy's picture

The BLS and GAO are both ends motivated.  

What should the numbers say?  How to get there is where we got heuristics, birth/death model, and all the other shenanigans they created to bury inflation and declining GDP.  A GDP of 3% is erased and then some by 4% inflation.

Simple

Who should I email, Olbermann or Beck?

 

Sat, 11/21/2009 - 17:00 | Link to Comment Anonymous
Sat, 11/21/2009 - 17:27 | Link to Comment delacroix
delacroix's picture

bernanke has an adgenda, and it has nothing to do with stabilizing the economy, or preventing inflation, or any other purpose than to facillitate the transfer of wealth and control of america to his zionist bosses.this juggling of numbers and political posturing is just smoke and mirrors. come on open your eyes and look at the big picture. a stealth coup has been taking place for years. this is war. we are under attack. a prisoner with extra food rations and yard priveleges, is still a prisoner. we have to throw these parasites off. they will feed on us to death, then feed on our children. they look like human beings, but they are something else.     bernanke  paulson   geitner  blankfein  goldman  frank  pelosi  lieberman and many more  who are these people, and where do their loyalties lie. this is bigger than money. what percentage of the population is jewish? what percentage of political, judicial, and financial positions are held by these people, many with dual citizenship. if israel is our close ally, they have a strange way of showing it.

Sat, 11/21/2009 - 17:30 | Link to Comment Anonymous
Sat, 11/21/2009 - 17:42 | Link to Comment Anonymous
Sat, 11/21/2009 - 19:14 | Link to Comment Rollerball
Rollerball's picture

Abso_kkkhenazi_fuken_lootly

Sat, 11/21/2009 - 19:13 | Link to Comment Anonymous
Sat, 11/21/2009 - 21:40 | Link to Comment Rollerball
Rollerball's picture

Small may they be, in the mirrors of thine own imaginings.

Sat, 11/21/2009 - 22:27 | Link to Comment Anonymous
Sat, 11/21/2009 - 17:46 | Link to Comment Anonymous
Sat, 11/21/2009 - 21:59 | Link to Comment Anonymous
Sun, 11/22/2009 - 15:30 | Link to Comment Anonymous
Sat, 11/21/2009 - 17:59 | Link to Comment Anonymous
Sun, 11/22/2009 - 02:20 | Link to Comment Anonymous
Sat, 11/21/2009 - 18:04 | Link to Comment ratava
ratava's picture

Of course he is wrong. If your purchasing power drops, the stuff you import will get more expensive. What is not to understand there. US is heading for Weimar 2 and EU for Great Depression 2 so the rest of the world can catch up. Fair game for global balance of living standards. Now watch Americans pissed off by all the Obamagogy elect Bush 3 who will consider that three behind his name a sign ;)

Sat, 11/21/2009 - 18:54 | Link to Comment Anonymous
Sat, 11/21/2009 - 22:31 | Link to Comment Anonymous
Sat, 11/21/2009 - 23:17 | Link to Comment Anonymous
Sat, 11/21/2009 - 18:05 | Link to Comment Anonymous
Sat, 11/21/2009 - 19:39 | Link to Comment Anonymous
Sat, 11/21/2009 - 18:15 | Link to Comment Comrade de Chaos
Comrade de Chaos's picture

Mark Faber on Gold:

 

http://www.youtube.com/watch?v=9HKN-A0EqyA&feature=player_embedded

 

gold physical bulls will :heart: it,

Sat, 11/21/2009 - 19:17 | Link to Comment Enkidu
Enkidu's picture

Anyone who has faith in 'potential' has never had kids!

Sat, 11/21/2009 - 19:31 | Link to Comment Anonymous
Sat, 11/21/2009 - 19:54 | Link to Comment Anonymous
Sat, 11/21/2009 - 21:39 | Link to Comment Anonymous
Sat, 11/21/2009 - 22:31 | Link to Comment delacroix
delacroix's picture

increase in commodity prices translates to higher prices for all products  (consumables.)  inflation isn't expansion of credit, it is declining purchasing power

Sat, 11/21/2009 - 20:18 | Link to Comment Anonymous
Mon, 11/23/2009 - 04:59 | Link to Comment andy55
andy55's picture

> Overall, the inflation folks have to sit themselves down and come up with a compelling answer to this question: How do you raise the prices of things no one is buying?

Answer: the Fed bids them up via asset purchase signaling for non-traditiationally purchased CB securities (equities, bonds, etc).  Read this:

http://ideas.repec.org/p/imf/imfwpa/03-64.html

The argument is deceptively strong: he who can issue fiat can can place as many bids as he likes.  Always, on any asset class.

Sat, 11/21/2009 - 20:21 | Link to Comment Anonymous
Sun, 11/22/2009 - 00:22 | Link to Comment JR
JR's picture

JOHN WILLIAMS’ SHADOW GOVERNMENT STATISTICS - COMMENTARY NUMBER 259 - November 18, 2009 says, "Using the 1980's BLS measure (before gimmicks) inflation rose to about 7.1% (7.13% for those using the extra digit) in October, versus 6.1% in September."

Gold is going up because of the attack on the dollar.  The price of oil is not related to reserves as much as speculation at the moment, but it is a key ingredient in making retail prices and utilities and everything else it touches cost more.  It may be going back down to $67, as you say,  but it hasn’t.  Supposing I say it may go to $150.  What does that mean? 

Housing? We went through one of the largest housing bubbles in history, a bubble that has not yet declined to market levels.  The price of housing still outstrips the ratios of rent and employment and wages.  It’s still out of sight for most people.

And food?  It’s not inflationary because the government switches the comparisons; or leaves it out of the inflation mix entirely.  Yet, the price of food already is slated for another big inflation jump.

Behind that 32 percent tuition increase at the University of California 10-campus system that the UC Board of Regents just passed for undergraduates, bringing the yearly cost to above $10,000 and following a 10 percent hike earlier this year, is INFLATION—higher prices for heating fuel, food, books, desks, uniforms, water, insurance, paper, equipment, maintenance and repair, travel, supplies, electricity, you name it.

And to top that off, American workers’ wages have dropped at record rates, while productivity has increased at record rates.  In fact, according to The Economic Populist:

Nonfarm business sector labor productivity increased at a 9.5 percent annual rate during the third quarter of 2009, the U.S. Bureau of Labor Statistics reported. This was the largest gain in productivity since the third quarter of 2003, when it rose 9.7 percent.

Unit labor costs in nonfarm businesses fell 5.2 percent in the third quarter of 2009; the increase in productivity outpaced the increase in hourly compensation. Unit labor costs declined 3.6 percent over the last four quarters— the largest decrease since the series began in 1948.

http://www.economicpopulist.org/content/productivity-costs-q3-2009

Since 1971, when US banks had created some 6 times the amount of paper money as they could redeem, when France and England had asked for their US dollars to be redeemed by the US treasury for the agreed upon $35 per ounce and were refused, and President Nixon announced that the dollar would "float,” i.e., the last time the world used a currency with any redeemable backing, American wages have either stagnated or decreased, after adjusting for inflation, particularly those at the middle and lower end of the pay scale.

 "Much of what we now call growth or GDP is really just one of three things in disguise: fixing blunders from the past, borrowing resources from the future, or shifting functions from the traditional realm of household and community to the realm of the monetized economy.  After rising somewhat between 1950 and the early 1970s, they said, the Genuine Progress Indicator (GPI) declined until in 1994 the GPI was 26% lower than it had been in 1973, and on a per capita basis it had fallen 42% since 1970!"

--Richard Stimson's "Playing with the Numbers"
citing the group "Redefining Progress,"
Clifford Cobb, Ted Halstead, and Jonathan Rowe

Sat, 11/21/2009 - 20:25 | Link to Comment Anonymous
Sat, 11/21/2009 - 22:44 | Link to Comment time123
time123's picture

As long as there is money printing, inflation remains a major problem down the road. It must STOP now.

time123

http://invetrics.com

Sat, 11/21/2009 - 22:54 | Link to Comment Anonymous
Sat, 11/21/2009 - 23:33 | Link to Comment Anonymous
Sun, 11/22/2009 - 00:53 | Link to Comment litoralkey
litoralkey's picture

 

 

Not sure if it was mentioned yet,

THE ST. LOUIS FED does not endorse this article or related research!

"Views expressed do not necessarily reflect official positions of the Federal Reserve System."

Everyone who reads this blog should know that.

 

Sun, 11/22/2009 - 03:11 | Link to Comment Anonymous
Sun, 11/22/2009 - 07:06 | Link to Comment Brick
Brick's picture

While I think the St Louis fed have picked up on a key point, gut instinct tells me their graph is wrong as well. Instinct tells me that the output gap went negative during 2009, but might be trending positive now. Think about it logically if the output gap was neutral at the moment why would we still be losing jobs.
Why use the last 50 years an why assume that the GDP figures are correct. We have had lots of bubbles in the last 30 years and the GDP figures are so tweaked nobody can really get any sort of grip on reality.

Sun, 11/22/2009 - 12:05 | Link to Comment Anonymous
Do NOT follow this link or you will be banned from the site!