Ethan Ilzetzki's picture
Affiliation: 
London School of Economics

Voting history

The UK Productivity Puzzle

Question 2: Which of the following was the second most important cause for the slowdown in UK productivity growth?

Answer:
Productivity mis-measurement
Confidence level:
Confident
Comment:
See above. In addition, productiivty is particularly difficult to measure in the financial sector and the shock to productivity in the crisis was a direct hit to this sector. Further, the sectoral breakdown of the productivity slowdown does appear to be skewed towards this sector. It's very likely that the two combined to show a measured productivity decline that doesn't correspond to any drop in real productivity.

Question 1: Which of the following was the most important cause for the slowdown in UK productivity growth?

Answer:
Low demand (including due to the financial crisis, austerity policies, or Brexit)
Confidence level:
Not confident
Comment:
The UK productivity slowdown pretty much coincides with the global financial crisis. There is growing evidence and theoretical foundations to the idea that low aggregate demand could lead to lower (measured) productivity either through scale effects or through unobserved capacity utilization.

Labour Markets and Monetary Policy

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Question 2: Do you agree that, in a period of great uncertainty and after a prolonged period of weak real wage growth, monetary policy makers can afford to wait for greater certainty about real wage developments and building inflationary pressure before raising interest rates?

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Answer:
Disagree
Confidence level:
Not confident
Comment:
The Bank of England has an inflation target. Inflationary pressures are starting to mount and it is the Bank's responsibility to respond to them. I agree, however, that the outlook is sufficiently uncertain that taking a gradual approach to interest rate increases is advisable.

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Question 1: Do you agree that a strong labour market is a good indicator of building inflationary pressure?

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Answer:
Agree
Confidence level:
Confident
Comment:
It is true that the (unconditional) correlation between inflation and employment has weakened, but I have not yet seen persuasive evidence that this implies a structural flattening of the Phillips Curve, nor a good explanation for why this may have happened. I therefore trust basic price theory, which suggests that wages (and therefore prices) will eventually increase if labour market tightness persists. The Phillips Curve was never a causal relationship, but rather a correlation that should hold empirically as long as the majority of price variance is due variation in aggregate demand. When aggregate supply shocks are dominant (as in the 1970s) this relationship reverses. Alternatively, if central banks successfully target inflation and/or inflation expectations are strongly anchored, we’d expect to see a zero correlation between inflation and employment, as is the case today.

Bitcoin and the City

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Question 2: Do you agree that the regulatory oversight of cryptocurrencies needs to be increased?

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Answer:
Disagree
Confidence level:
Confident
Comment:
It is hard to envision these currencies becoming true alternatives to government-based fiat currencies in the forseeable future, so they will likely continue to be toys for a limitted number of collectors. In terms of financial stability, a more likely threat is web-based financial institutions (internet banks) playing a larger and larger role, augmenting or disrupting the existing financial system. This seems inevitable to me and may change the regulartory requirements dramatically. (And internet banks will largely borrow and lend in government based currencies, not in Bitcoin, ect.)

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