Matthieu Bussière, Menzie Chinn, Laurent Ferrara, Jonas Heipertz, 05 July 2018

The ‘Fama puzzle’ is the finding that ex post depreciation and interest differentials are negatively correlated, contrary to what theory suggests. This column re-examines the puzzle for eight advanced country exchange rates against the US dollar, over the period up to February 2016. The rejection of the joint hypothesis of uncovered interest parity and rational expectations still occurs, but with much less frequency. In contrast to earlier findings, the Fama regression coefficient is positive and large in the period after the Global Crisis, but survey-based measures of exchange rate expectations reveal greater evidence in favour of uncovered interest parity.

Shang-Jin Wei, 25 June 2013

The Chinese central bank has recently dropped hints that it will quicken the pace of interest-rate reforms, moving towards a more market-determined regime. Will this reduce China’s ‘excessive’ savings and current-account surplus? This column argues that it won’t. While the interest-rate reform may carry many benefits, reducing the country’s current-account surplus is not one of them.

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