62.
The catch-up effect says that countries with low income can grow faster than countries with
higher income.
However, in statistical studies that include many diverse countries we do not observe the catch–
up-effect unless we
control for other variables that affect productivity. Considering the
determinants of productivity, list and explain some
things that would tend to prohibit or limit a
poor country‘s ability to catch up with the rich ones.
63.
Some data that at first might seem puzzling: The share of GDP devoted to investment was similar
for the United
States and South Korea from 1960–1991. However, during these same years South
Korea had a 6 percent growth
rate of average annual income per person, while the United States
had only a 2 percent growth rate. If the saving
rates were the same, why were the growth rates
so different?