The IMF has debunked the myth of Osborne's fiscal "credibility"

Slowing the cuts would not trigger a bond market revolt.

There is a huge amount of interesting material in the full IMF staff report on the UK, released today, in particular the lasting damage ("hysteresis" to economists) done by this prolonged period of very low growth.  But in this post I wanted to draw attention to one particular paragraph (it is para 43 on page 38).   I reproduce it here in full:

Some further slowing of consolidation is unlikely to trigger major market turmoil

43. Further slowing consolidation would likely entail the government reneging on its net debt mandate. Would this trigger an adverse market reaction? Such hypotheticals are impossible to answer definitively, but there is little evidence that it would. In particular, fiscal indicators such as deficit and debt levels appear to be weakly related to government bond yields for advanced economies with monetary independence. Though such simple relationships are only suggestive, they indicate that a moderate increase in the UK’s debt-to-GDP ratio may have small effects on UK sovereign risk premia (though a slower pace of fiscal tightening may increase yields through expectations of higher near-term growth and tighter monetary policy).  This conclusion is further supported by the absence of a market response to the easing of the pace of structural adjustment in the 2011 Autumn Statement. Bond yields in the US and UK during the Great  Recession have also correlated positively with equity price movements, indicating that bond yields have been driven more by growth expectations than fears of a sovereign crisis.

This couldn't be clearer.  It is saying two things.  First, the reason long-term gilt yields are low in the UK (and similarly in virtually every other "advanced economy with monetary independence") is weak growth, not "confidence" or "credibility".  "Bond yields are driven more by growth expectations."  That is, yields are low not because of economic confidence but because of its exact opposite. This is precisely what I and others (Simon Wren-Lewis here, and of course Paul Krugman in the US) have long been arguing.  Indeed, the specific evidence the IMF cites - that yields have fallen when stock markets have fallen - is precisely that, in the UK, I first pointed  here a year ago.  

Second, that there is no reason to believe that slowing fiscal consolidation would "trigger an adverse market reaction".  In other words, when the Chancellor said that "these risks [of slowing consolidation] are very real, not imaginary", he was, once again, indulging in evidence-free speculation, not serious analysis.  Indeed, the Fund accurately points out that the main reason yields might rise (slightly, not precipitiously) if fiscal policy were to be loosened would be because of "expectations of higher near-term growth". As I pointed out here, this would be good news.

So, the IMF agrees that the reason gilt yields are low is because of weak growth, not confidence; and that we could loosen policy with minimal risk and probable benefit.  This is an explicit endorsement of the argument set out by Paul Krugman and Richard Layard (and endorsed by a long list of eminent economists, not to mention me) in their Manifesto for Economic Sense:  "there is massive evidence against the confidence argument; all the alleged evidence in favor of the doctrine has evaporated on closer examination."

 As I noted, the Fund's recommendations are, to be polite, inconsistent. But the analysis is spot on. And it explodes whatever is left of the credibility of the analysis underlying the government's fiscal strategy.

This piece originally appeared on Jonathan Portes's blog Not the Treasury view ...

George Osborne, "indulging in evidence-free speculation, not serious analysis." Photograph: Getty Images.

Jonathan Portes is senior fellow The UK in a Changing Europe and Professor of Economics and Public Policy, King’s College London.

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The deafening killer - why noise will be the next great pollution scandal

A growing body of evidence shows that noise can have serious health impacts too. 

Our cities are being poisoned by a toxin that surrounds us day and night. It eats away at our brains, hurts our hearts, clutches at our sleep, and gnaws at the quality of our daily lives.

Hardly a silent killer, it gets short shrift compared to the well-publicised terrors of air pollution and sugars food. It is the dull, thumping, stultifying drum-beat of perpetual noise.

The score that accompanies city life is brutal and constant. It disrupts the everyday: The coffee break ruined by the screech of a line of double decker buses braking at the lights. The lawyer’s conference call broken by drilling as she makes her way to the office. The writer’s struggle to find a quiet corner to pen his latest article.

For city-dwellers, it’s all-consuming and impossible to avoid. Construction, traffic, the whirring of machinery, the neighbour’s stereo. Even at home, the beeps and buzzes made by washing machines, fridges, and phones all serve to distract and unsettle.

But the never-ending noisiness of city life is far more than a problem of aesthetics. A growing body of evidence shows that noise can have serious health impacts too. Recent studies have linked noise pollution to hearing loss, sleep deprivation, hypertension, heart disease, brain development, and even increased risk of dementia.

One research team compared families living on different stories of the same building in Manhattan to isolate the impact of noise on health and education. They found children in lower, noisier floors were worse at reading than their higher-up peers, an effect that was most pronounced for children who had lived in the building for longest.

Those studies have been replicated for the impact of aircraft noise with similar results. Not only does noise cause higher blood pressure and worsens quality of sleep, it also stymies pupils trying to concentrate in class.

As with many forms of pollution, the poorest are typically the hardest hit. The worst-off in any city often live by busy roads in poorly-insulated houses or flats, cheek by jowl with packed-in neighbours.

The US Department of Transport recently mapped road and aircraft noise across the United States. Predictably, the loudest areas overlapped with some of the country’s most deprived. Those included the south side of Atlanta and the lowest-income areas of LA and Seattle.

Yet as noise pollution grows in line with road and air traffic and rising urban density, public policy has turned a blind eye.

Council noise response services, formally a 24-hour defence against neighbourly disputes, have fallen victim to local government cuts. Decisions on airport expansion and road development pay scant regard to their audible impact. Political platforms remain silent on the loudest poison.

This is odd at a time when we have never had more tools at our disposal to deal with the issue. Electric Vehicles are practically noise-less, yet noise rarely features in the arguments for their adoption. Just replacing today’s bus fleet would transform city centres; doing the same for taxis and trucks would amount to a revolution.

Vehicles are just the start. Millions were spent on a programme of “Warm Homes”; what about “Quiet Homes”? How did we value the noise impact in the decision to build a third runway at Heathrow, and how do we compensate people now that it’s going ahead?

Construction is a major driver of decibels. Should builders compensate “noise victims” for over-drilling? Or could regulation push equipment manufacturers to find new ways to dampen the sound of their kit?

Of course, none of this addresses the noise pollution we impose on ourselves. The bars and clubs we choose to visit or the music we stick in our ears. Whether pumping dance tracks in spin classes or indie rock in trendy coffee shops, people’s desire to compensate for bad noise out there by playing louder noise in here is hard to control for.

The Clean Air Act of 1956 heralded a new era of city life, one where smog and grime gave way to clear skies and clearer lungs. That fight still goes on today.

But some day, we will turn our attention to our clogged-up airwaves. The decibels will fall. #Twitter will give way to twitter. And every now and again, as we step from our homes into city life, we may just hear the sweetest sound of all. Silence.

Adam Swersky is a councillor in Harrow and is cabinet member for finance. He writes in a personal capacity.