Bernankeology

Why so much is read into the words of the Fed chairman.

Following Fed chairman Ben Bernanke's speech yesterday, the usual bout of trying to understand quite how much we can read in to his words has begun. Yet unlike the normally perjorative "Kremlinology" – attempting to infer things from the most minuscule turns of phrase – this Bernankeology is understandable and quite useful.

Central bankers have a strange job. They don't actually have many tools at their disposal; largely just the tripartite decision to raise, lower, or maintain interest rates. Yet many of the outcomes they create come, not from actually using this power, but from creating expectations as to their future use.

Suppose Bernanke knows he is likely to raise interest rates in the first quarter of 2013. Even though his actual power is relatively limited, he can create a wide spectrum of outcomes depending on how he announces this. The market reaction will be extremely different if Bernanke says now that he will raise rates in a years time, compared to if he maintains right up until the day that a rate rise would be inappropriate.

But this power to persuade brings with it its own problems. Just like a legislature, a central bank is fundamentally unable to constrain itself; it can make promises, but everyone knows that it is free to break them at any point.

All of this means that every speech Bernanke gives is likely to be very carefully aimed at creating just the right set of expectations. On the one hand, he can't ever gain a reputation for untrustworthiness, so they have to be scrupulously honest; on the other, actually saying what he believes may create the wrong impression.

Last week, Ryan Avent provided a detailed breakdown of exactly what the benefits of Bernankeology can be, focusing on the Fed's "forward guidance" where it hinted that it would keep interest rates low until at least 2013. He writes:

On the one hand, a pure focus on the language of the Fed's statement indicates that rates are likely to remain low through that period based on the state of the economy... On the other hand, the Fed may be hinting that it will be willing to keep rates low through late 2014 even if the trajectory of the economy warrants a rate increase.

In other words, the Fed might be attempting to commit itself to a deviation from its normal policy rules of the sort that might generate more rapid growth and inflation.

The problem the Fed has is that it needs to generate growth, but that growth is likely to come with relatively high inflation, of the sort which Bernanke has historically fought against. In order to help the economy, he needs to convince "the markets" that interest rates will be kept low even if inflation spirals out of control. The problem is that this, from an inflationary hawk like Bernanke, is unbelievable.

Avent points to a paper (pdf) which breaks down the distinction into two categories:

Delphic, corresponding to the first category above, and Odyssean, corresponding to the second, in which the central bank attempts to commit itself to deviations from typical rules.

Matt Yglesias offers a less refined version of the same strategy, breaking Bernanke's possible responses into an Eeyore response and a Tigger one. Either the Fed chief can "avoid optimistic forecasts as a way of signaling that rates will stay low for a long time," or he "can say we're climbing out of a steep hole so rates will stay low for the next 18 months come what may".

The test for Bernankeologists is to work out whether yesterday's gloomy speech is Odyssean-Eeyore, using gloominess as a mast to bind himself to, or simply Delphic, with the chairman making his most honest predictions and still being pessimistic.

Occupy LA activists march against the Fed in November. Credit: Getty

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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Who will win the Copeland by-election?

Labour face a tricky task in holding onto the seat. 

What’s the Copeland by-election about? That’s the question that will decide who wins it.

The Conservatives want it to be about the nuclear industry, which is the seat’s biggest employer, and Jeremy Corbyn’s long history of opposition to nuclear power.

Labour want it to be about the difficulties of the NHS in Cumbria in general and the future of West Cumberland Hospital in particular.

Who’s winning? Neither party is confident of victory but both sides think it will be close. That Theresa May has visited is a sign of the confidence in Conservative headquarters that, win or lose, Labour will not increase its majority from the six-point lead it held over the Conservatives in May 2015. (It’s always more instructive to talk about vote share rather than raw numbers, in by-elections in particular.)

But her visit may have been counterproductive. Yes, she is the most popular politician in Britain according to all the polls, but in visiting she has added fuel to the fire of Labour’s message that the Conservatives are keeping an anxious eye on the outcome.

Labour strategists feared that “the oxygen” would come out of the campaign if May used her visit to offer a guarantee about West Cumberland Hospital. Instead, she refused to answer, merely hyping up the issue further.

The party is nervous that opposition to Corbyn is going to supress turnout among their voters, but on the Conservative side, there is considerable irritation that May’s visit has made their task harder, too.

Voters know the difference between a by-election and a general election and my hunch is that people will get they can have a free hit on the health question without risking the future of the nuclear factory. That Corbyn has U-Turned on nuclear power only helps.

I said last week that if I knew what the local paper would look like between now and then I would be able to call the outcome. Today the West Cumbria News & Star leads with Downing Street’s refusal to answer questions about West Cumberland Hospital. All the signs favour Labour. 

Stephen Bush is special correspondent at the New Statesman. His daily briefing, Morning Call, provides a quick and essential guide to British politics.