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Whatever Happened to Africa’s Rapid Urbanisation?
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Dr Deborah Potts, World Economics, June 2012
It is widely believed that urbanisation is occurring faster in sub-Saharan Africa than anywhere else in the world, as migrants move from rural to urban settlements. This is a fallacy. While the populations of numerous urban areas are growing rapidly, the urbanisation levels of many countries are increasing slowly – if at all. Natural increase, rather than net in-migration, is the predominant growth factor in most urban populations. African governments, policymakers and international donors need to acknowledge fundamental changes in urbanisation trends, and respond to the irrefutable messages these impart about urban employment, incomes and economic development.
House Price Indices: Does Measurement Matter?
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Mick Silver, World Economics, September 2011
A key factor in understanding the global recession is movements in residential property price indexes (RPPIs). Of concern is that more than one national RPPI is often compiled and disseminated for a country, each differing in regard to their methodology, and thus results. Key methodological issues include the: (i) use of stocks or flows and values or quantities for weights; (ii) method of enabling constant quality measures; (iii) coverage in terms of geography, type of housing and financing; and (iv) valuation of prices. The paper outlines such issues by way of three case studies: the United Kingdom, the United States and the Russian Federation.

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