Capital Intensity and Growth
The use of tools and machinery makes labor more effective, so rising capital intensity (or "capital deepening") pushes up the productivity of labor. Capital intensive societies tend to have a higher standard of living over the long run.
Calculations made by Solow claimed that economic growth was mainly driven by technological progress (productivity growth) rather than inputs of capital and labor. However recent economic research has invalidated that theory, since Solow did not properly consider changes in both investment and labor inputs.
Dale Jorgenson, of Harvard University, President of the American Economic Association in 2000, concludes that: ‘Griliches and I showed that changes in the quality of capital and labor inputs and the quality of investment goods explained most of the Solow residual. We estimated that capital and labor inputs accounted for 85 percent of growth during the period 1945–1965, while only 15 percent could be attributed to productivity growth… This has precipitated the sudden obsolescence of earlier productivity research employing the conventions of Kuznets and Solow.’
John Ross has analysed the long term correlation between the level of investment in the economy, rising from 5-7% of GDP at the time of the Industrial Revolution in England, to 25% of GDP in the post-war German ‘economic miracle’, to over 35% of GDP in the world’s most rapidly growing contemporary economies of India and China.
Taking the G7 and other largest economies, Jorgenson and Vu conclude: ‘the growth of world output between input growth and productivity… input growth greatly predominated… Productivity growth accounted for only one-fifth of the total during 1989-1995, while input growth accounted for almost four-fifths. Similarly, input growth accounted for more than 70 percent of growth after 1995, while productivity accounted for less than 30 percent.’
Regarding differences in output per capita Jorgenson and Vu conclude: ‘differences in per capita output levels are primarily explained by differences in per capital input, rather than variations in productivity.’
Some economists claimed that the Soviet Union missed the lessons of the Solow growth model, because starting in the 1930s, the Stalin government attempted to force capital accumulation through state direction of the economy. However, Solow's calculations have been proven invalid, so this is a poor explanation. Modern research shows the main factor for economic growth is the growth of labor and capital inputs, not increases in productivity. Therefore other factors besides capital accumulation must have been big contributors to the Soviet economic crisis.
Free market economists tend to believe that capital accumulation should be not be managed by government, but instead be determined by market forces. Monetary stability (which increases confidence), low taxation, and greater freedom for the entrepreneur would then promote capital accumulation.
The Austrian School maintains that the capital intensity of any industry is due to the roundaboutness of the particular industry and consumer demand.
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Famous quotes containing the words capital, intensity and/or growth:
“Capital is money, capital is commodities.... By virtue of it being value, it has acquired the occult ability to add value to itself. It brings forth living offspring, or, at the least, lays golden eggs.”
—Karl Marx (1818–1883)
“A man of my spiritual intensity does not eat corpses.”
—George Bernard Shaw (1856–1950)
“A revolution is not the overturning of a cart, a reshuffling in the cards of state. It is a process, a swelling, a new growth in the race. If it is real, not simply a trauma, it is another ring in the tree of history, layer upon layer of invisible tissue composing the evidence of a circle.”
—Kate Millett (b. 1934)