Problems with Regional Production Functions and Estimates of Agglomeration Economies: A Caveat Emptor for Regional Scientists
AbstractOver the last 20 years or so, mainstream economists have become more interested in spatial economics and have introduced largely neoclassical economic concepts and tools to explain phenomena that were previously the preserve of economic geographers. One of these concepts is the aggregate production function, which is also central to much of regional growth theory. However, as Franklin Fisher, inter alios, has shown, the conditions necessary to aggregate microproduction functions into an aggregate production function are so stringent that in all probability the aggregate production function does not exist. This paper shows that the good statistical fits commonly found empirically are solely due to the use of value data and an underlying accounting identity. The result is that the estimates obtained cannot be regarded as providing evidence of the underlying technological structure of the spatial economy, including the aggregate elasticity of substitution, the degree of returns to scale, and the rate of technical progress.
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Date of creation: May 2012
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Accounting Identity; Agglomeration Economies; Regional Aggregate Production Functions;
Find related papers by JEL classification:
- B50 - Schools of Economic Thought and Methodology - - Current Heterodox Approaches - - - General
- O4 - Economic Development, Technological Change, and Growth - - Economic Growth and Aggregate Productivity
- R11 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General Regional Economics - - - Regional Economic Activity: Growth, Development, Environmental Issues, and Changes
This paper has been announced in the following NEP Reports:
- NEP-ALL-2012-05-29 (All new papers)
- NEP-EFF-2012-05-29 (Efficiency & Productivity)
- NEP-PKE-2012-05-29 (Post Keynesian Economics)
- NEP-URE-2012-05-29 (Urban & Real Estate Economics)
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