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Howard Davies was a deputy governor of the Bank of England, and the first head of the UK FSA. He is one of the world’s leading thinkers on financial regulation and monetary policy, and one of the people who combines skills in both finance and monetary economics. In a recent article, he focuses on the five interesting questions about central banks and asset prices. Everyone interested in monetary policy today needs to ask themselves these five questions.

Q1: Should central banks target asset prices?

Davies points out that the consensus view is that central banks should remain focused on inflation targeting and not target asset prices.

However, pretty much everyone would agree that information from the world around us, about asset prices, is useful for forecasting inflation and output, and should be used in figuring out what values for output and inflation we put into our Taylor rules (whatever they might be).

So it seems that on this question, there is consensus: Asset prices are (and have always been) useful inputs in monetary policy formulation, but monetary policy should continue to do inflation targeting and not asset price targeting.

Q2: Should the measure of inflation targeted include an element of asset price, and particularly house price inflation?

Any reasonable CPI must have house rent in it, and through this, a boom in house prices and thus rents will get reflected in the CPI. This would give one more channel through which asset prices would directly influence a traditional inflation-targeting central bank.

Q3: Is it possible to identify serious asset price misalignments, and are they of legitimate concern to monetary policy-makers?

This is controversial territory. Some economists believe it is possible to ask central banks to make a call on when asset prices are misaligned.

I am personally skeptical about the extent to which this is possible. It is always easy to look back, ex-post, and say that it was obvious that US house prices were way off in 2006. But how many of the people who say this today were shorting US housing then?

Making a call about asset price fluctuations is hard even for a well motivated hedge fund manager. It is doubly hard in the public sector given the peculiar combination of skills and incentives that are found within central banks. The people with real skill in these things are unlikely to choose to work in a central bank; years spent in a central bank do not hone skills at market timing; the public will be very irritated if a central bank calls wrong.

So overall, I’m skeptical about the extent to which central banks (past or future) can usefully make calls about when asset prices are out of whack.

Q4: Even if we can identify misalignments, and believe that some price adjustment is bound to occur, is it right to use interest rates to try to moderate the expansion?

Even if you knew that asset prices were grossly wrong, interest rates seem to be a very blunt tool, which inflict collateral damage all around the economy. Davies quotes Mervyn King who said two months ago: Diverting monetary policy from its goal of price stability risks making the economy less stable and the financial system no more so.

Q5: Should we try to find and use mechanisms other than interest rates to moderate extravagant credit expansion and associated asset price bubbles?

I think there is a good case for building some kinds of counter-cyclicality into financial regulation. But operationalising this is hard.

It should be feasible for financial regulators to have three manuals which govern boom times, normal times, and recessions. Full public disclosure of these three manuals is, of course essential, to avoid the usual issues of transparency and consistency. The question is: When would you flip from one manual to another?

Doing this based on asset prices runs into the difficulties articulated above. How is a civil servant to know when asset prices are in a boom or a bust?

Doing it based on business cycle conditions is more objective and feasible. It should be possible to setup indicators like Eurocoin which give low latency information about a coincident indicator. This could be used to drive rules about when we go into each of the three manuals. I personally think this would be useful.

Such efforts can be rationalised on the narrow ground that we seek to reduce the extent to which finance is a source of pro-cyclicality in the economy. If this is done right, it would reduce the amount of heavy lifting that monetary and fiscal policy have to do by way of stabilisation.

You don’t have to have a `financial markets are irrational’ view to support this. All you have to believe is that the existing structures of financial regulation are a source of pro-cyclicality. If that much is agreed, then there is a case for changing the framework of financial regulation so as to reduce the extent to which this is the case.

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