Disembodied Technical Change in a Two-Sector Model

Peter Diamond

Chapter 7 in Readings in the Theory of Growth, 1971, pp 53-60 from Palgrave Macmillan

Abstract: Abstract There are two aspects of technical change that are essential for a description of the behavior of an economy over time. These are the rate of technical progress and the bias of the change. For a twice-differentiable production function, F(K, L, t) homogeneous of the first degree, with positive marginal products and a diminishing marginal rate of substitution everywhere, where K is capital; L, labor; t, time; these two aspects can be characterized by two indices:2 (1) T = F t F = K F K t + L F L t K F K + L F L $$T = \frac{{{F_t}}}{F} = \frac{{K{F_{{K^t}}} + L{F_{{L^t}}}}}{{K{F_K} + L{F_L}}}$$ (2) D = ∂ ( F K / F L ) ∂ t / F K F L = F K t F K − F L t F L . $$D = \frac{{\partial \left( {{F_K}/{F_L}} \right)}}{{\partial t}}/\frac{{{F_K}}}{{{F_L}}} = \frac{{{F_{{K^t}}}}}{{{F_K}}} - \frac{{{F_{{L^t}}}}}{{{F_L}}}.$$

Date: 1971
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Journal Article: Disembodied Technical Change in a Two-Sector Model (1965)
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DOI: 10.1007/978-1-349-15430-2_7

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