![]() ![]() When we divide our sample of 82 countries up into several subsamples based on initial levels of capital per worker, we find that we can continue to reject a Cobb Douglas specification. We find that for the entire 82 country 28 year panel we can reject a Cobb Douglas specification for the aggregate production function. ![]() These data are used to estimate a general CES production function specification for which the Cobb Douglas specification is a special case. We consider new World Bank data on GDP, the labor supply, the stock of physical capital and educational attainment per worker for a panel of 82 countries over a 28 year period fi'om 196(b87. ![]() In this paper we question the empirical relevance of the Cobb Douglas specification. ![]() Many models of growth and development assume that aggregate output is generated by a Cobb Douglas specification for the aggregate production function with labor, physical capital, and sometimes human capital as inputs. ![]()
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