Productivity Spillovers in the Global Market
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This paper analyzes the effect of productivity shocks originating from other countries on economic growth in the home country. Traditionally, productivity shocks have been considered as driving forces of economic growth in their home countries. However, productivity improvements occur both at home and overseas. In liberalized global markets, economic growth is, in theory, also attributable to productivity shocks from other countries. Using data from 18 countries, we show that numerous countries benefit from productivity spillovers. Nevertheless, their impacts on the economy differ according to the origin of the economic shocks. On the one hand, US shocks are rather pervasive and affect many economies and regions, regardless of their development stage. On the other hand, shocks from other country groups exert less influence over foreign economies. Thus, homogeneous effects of productivity spillovers across countries, which are often assumed in previous studies using the standard panel data and spatial models, are inappropriate. The mixed results from previous global analyses, particularly using macroeconomic data, are attributable to such heterogeneous effects of productivity shocks.
KeywordsProductivity Economic growth International transmission Global vector autoregression
JEL Classification:C32 O47
We would like to thank Gabriel Cordoba for the research assistance. This research was initiated when Khan was visiting Tohoku University. A financial support for travel expenses was provided by the Japan Investment Advisers Association.
Declarations of interest
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