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ECONOMIC GROWTH II:
TECHNOLOGY, EMPIRICS, AND POLICY
Ridwan Islam Sifat
ID: 16121036
Rahanuma Islam Mithila
ID:16121035
CONTENTS
• Introduction
• Solow Growth Model
• Technological Progress in the Solow Model
• The Efficiency of Labor
• The Steady State with Technological Progress
INTRODUCTION
• Macroeconomics tend to adopt more approaches, with models
often being developed with the intention of helping to explain
one particular aspect of macro economy.
• The first model that will a model of economic growth.
SOLOW GROWTH MODEL
• The Solow growth model is a
standard neoclassical model of
economic growth developed by
Robert Slow and Trevor Swan in
1956.
• It has three basic sources for GDP:
i) Labor (L)
ii) Capital (K)
Iii) Knowledge (A)
TECHNOLOGICAL PROGRESS IN THE SOLOW MODEL
• The third source of economic growth is technological progress.
• It is called the residual factor of economic growth.
• Technological progress alters the relationship between inputs
(capital and labor) and the output of goods and services and thus
leads to exogenous increases to societies capacity to produce.
EFFICIENCY OF LABOR
• To incorporate technological progress, we must return to
the production function that relates total capital K and
total labor L to total output Y. Thus far, the production
function has been:
Y = F(K, L).
We now write the production function as:
Y = F(K, L × E),
where E is a new variable called the efficiency of labor.
• Suppose, K= 4 in both 1984 and 2011
L= 10 in 1984 and L= 1 in 2011
The old function F(K,L) will say that output is larger in 1984.
• But we know that output is the same in both years because just
one worker in 2011 can do the work of 10 workers of 1984.
• We need a new production function : F(K, L × E)
• Assumption: the efficiency of labor grows at the constant and
exogenous rate g.
Example : if g= 0.02, then each unit of labor force 2 percent
efficient each year : output increases as if the labor force had
increased 2 percent.
• This is called labor augmenting and ‘g’ is called the rate of labor
augmenting technological progress.
• The labor force ‘L’ is growing at rate ‘n’ and the efficiency of each
unit of labor E is growing rate ‘g’.
Effective number of workers L × E is growing at rate n+g.
REFERENCES

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Economic Growth II:Technology, Empirics, and Policy

  • 1. ECONOMIC GROWTH II: TECHNOLOGY, EMPIRICS, AND POLICY Ridwan Islam Sifat ID: 16121036 Rahanuma Islam Mithila ID:16121035
  • 2. CONTENTS • Introduction • Solow Growth Model • Technological Progress in the Solow Model • The Efficiency of Labor • The Steady State with Technological Progress
  • 3. INTRODUCTION • Macroeconomics tend to adopt more approaches, with models often being developed with the intention of helping to explain one particular aspect of macro economy. • The first model that will a model of economic growth.
  • 4. SOLOW GROWTH MODEL • The Solow growth model is a standard neoclassical model of economic growth developed by Robert Slow and Trevor Swan in 1956. • It has three basic sources for GDP: i) Labor (L) ii) Capital (K) Iii) Knowledge (A)
  • 5. TECHNOLOGICAL PROGRESS IN THE SOLOW MODEL • The third source of economic growth is technological progress. • It is called the residual factor of economic growth. • Technological progress alters the relationship between inputs (capital and labor) and the output of goods and services and thus leads to exogenous increases to societies capacity to produce.
  • 6. EFFICIENCY OF LABOR • To incorporate technological progress, we must return to the production function that relates total capital K and total labor L to total output Y. Thus far, the production function has been: Y = F(K, L). We now write the production function as: Y = F(K, L × E), where E is a new variable called the efficiency of labor.
  • 7. • Suppose, K= 4 in both 1984 and 2011 L= 10 in 1984 and L= 1 in 2011 The old function F(K,L) will say that output is larger in 1984. • But we know that output is the same in both years because just one worker in 2011 can do the work of 10 workers of 1984. • We need a new production function : F(K, L × E)
  • 8. • Assumption: the efficiency of labor grows at the constant and exogenous rate g. Example : if g= 0.02, then each unit of labor force 2 percent efficient each year : output increases as if the labor force had increased 2 percent. • This is called labor augmenting and ‘g’ is called the rate of labor augmenting technological progress. • The labor force ‘L’ is growing at rate ‘n’ and the efficiency of each unit of labor E is growing rate ‘g’. Effective number of workers L × E is growing at rate n+g.
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