“Competition and Inflation in CESEE Countries : A Sectoral Analysis” by Reiner Martin and Julia...
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Transcript of “Competition and Inflation in CESEE Countries : A Sectoral Analysis” by Reiner Martin and Julia...
“Competition and Inflation in CESEE Countries : A Sectoral Analysis”
by Reiner Martin and Julia Worz
Comments by Ricardo V. Lago
Motivation and Method of the paper
• Investigate the impact of sector–specific competition on price developments in 11 countries and 20 sectors in the period 1999 -2007
• 20 Sectors : – 7 Wholesale Trade – 7 Retail Trade – 3 Consumer Services– 3 Manufacturing
• Uses as two proxies to measure competition : Rate of Return on Assets Herfindahl Index of Sales Concentration
Inflation mark-up equation
Explanatory variables – Competition proxy
Rate of Return on Assets – Macro Variables
Lagged Inflation Output Gap M3 growth
– Cost -push Oil price inflation Wage inflation other input price inflation
Conclusions
• Patterns of evolution of competition are
uniform across sectors rather the countries• Competition proxied by Rate of Return of
Assets is significant on 17 sectors of Services • Competition proxied by Rate of Return of
Assets is not significant for manufacturing
Comments • You frame it in terms of effect on competition on
sectoral inflation • I believe that what is at work , however , is the
Balassa –Samuelson effect rather than low competition by itself
• The relative price of non –tradables to tradables increases overtime , because productivity growth is faster in the manufacturing /tradeable sector
• In other words the real exchange rate appreciates • Had all the countries freely float their currencies ,
your ROA parameter would have no significance• Herfindahl index irrelevant for manufacturing
beacause it caters to the world market
From Dollarization and Euroizationto Goldization
How much gold over the ground ?