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Inflation dynamics and trade openness: with an application to South Africa
Janine
Aron
John
Muellbauer
WPS/2007-11
ABSTRACT: Evolving openness to trade is hard to measure, despite its relevance to models of growth,
inflation and exchange rates. Our innovative technique measures trade openness encompassing both
observable trade policy (tariffs and surcharges) and unobservable trade policy (quotas and other nontariff
barriers), capturing the latter by a smooth non-linear stochastic trend in a model for the share of
manufactured imports in home demand for manufactured goods, controlling for the business cycle and
exchange rate. The evidence for South Africa suggests that increased openness has significantly
reduced the mean inflation rate and has reduced the exchange rate pass-through into wholesale prices.
SUGGESTED CITATION: Janine Aron and John Muellbauer,
"Inflation dynamics and trade openness: with an application to South Africa"
(June 1, 2007).
The Centre for the Study of African Economies Working Paper Series.
Working Paper 270.
http://www.bepress.com/csae/paper270
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