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- Durevall, Dick, 1954, et al.
(författare)
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Inflation Dynamics and Food Prices in Ethiopia
- 2010
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- During the global food crisis, Ethiopia experienced an unprecedented increase in inflation, among the highest in Africa. Using monthly data over the past decade, we estimate models of inflation to identify the importance of the factors contributing to CPI inflation and three of its major components: cereal prices, food prices, and non-food prices. Our main finding is that movements in international food and goods prices, measured in domestic currency, determined the long-run evolution of domestic prices. In the short run, agricultural supply shocks affected food inflation, causing large deviations from long-run price trends. Monetary policy seems to have accommodated price shocks, but money supply growth affected short-run non-food price inflation. Our results suggest that when analyzing inflation in developing economies with a large food share in consumer prices, world food prices and domestic agricultural production should be considered. Omitting these factors can lead to biased results and misguided policy decisions.
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- Durevall, Dick, 1954, et al.
(författare)
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The Futile Quest for a Grand Explanation of Long-Run Government Expenditure
- 2010
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- This paper carries out a critical reappraisal of the two contending theories purporting to explain long-run government spending: Wagner’s Law and different variants of the ratchet effect. We analyze data spanning from the early 19th century until the present day in Sweden and the United Kingdom. Hence, in contrast to previous studies, we evaluate the validity of Wagner’s Law and the ratchet effect hypothesis over a very long time period, starting at the beginning of industrialization. Cointegration analysis is used to investigate the long-run relationships between government expenditure and GDP, focusing on sub-periods and parameter stability. Moreover, we test the ratchet effect hypothesis by estimating models which allow for asymmetric adjustment. According to our main results, Wagner’s Law does not hold in the long run, although the data are consistent with Wagner’s Law between roughly 1860 and the late 1960s in Sweden, and the 1970s in the UK. This can be traced to the formation of the modern public sector, including the introduction of public education, health care, and so forth. Yet Wagner’s Law did not hold during the initial industrialization phase (before 1860), or during recent periods. Finally, we find some evidence of asymmetric adjustment, particularly in the post WWII period in the UK: Public expenditure grows more during bad times than it decreases during good times. However, the ratchet effect is only a short to mediumterm phenomenon.
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