33.
The Phillips Curve
The Phillips Curve
asserts a permanent trade-off between unemployment and inflation based on empirical
data and the strict Keynesian theory that an economy can suffer either from
inflation or unemployment problems but never both simultaneously. In fact, there is no permanent or
long-term trade-off between the two.
The only reason that
a temporary or short-term trade-off does occur is because of a lack of
understanding of actual conditions by workers. When inflation unexpectedly increases, workers are caught
off guard and continue to engage in a job search based on a now-mistaken
understanding of the value of money.
Once workers realize that inflation has undermined the value of money
they then adjust their wage requirements upward to compensate for the reduced
dollar value and thereby lengthen the duration of the job search and increase
the unemployment rate itself.
The reverse occurs in
times of disinflation (consecutively lower rates of inflation). A temporary or short-term tradeoff
results from workers being caught off guard as they now seek unrealistic wage
rates. Once workers realize that
inflation is not undermining the value of money as rapidly as they had
anticipated, they lower their wage expectations thereby shortening the duration
of the job search and reducing the unemployment rate.
The recent statistics
demonstrate the truth of the above as inflation and unemployment increased
during the 1970's and then both decreased during the 1980's:
| Year |
Unemployment |
Inflation |
| 1970 |
4.1% |
5.7% |
| 1979 |
5.8% |
11.3% |
| 1980 |
7.1% |
13.5% |
| 1989 |
5.3% |
5.4% |
Interestingly, Milton
Friedman postulated the correct understanding of a short-term tradeoff of
inflation and unemployment in the mid-60's when the Phillips Curve notion of a
permanent tradeoff was considered holy writ by most economists. Even more amazing is that Ludwig von
Mises anticipated both the faulty and the correct theories in 1952!
By tying the theory
to actual individual micro-decisions, Friedman and Mises applied the correct
methodology. In contrast, the
Keynesians, believing that the aggregate "inflation" and the
aggregate "unemployment" somehow acted directly on one another,
failed to tie all economic questions to individual behavior and therefore
misled an entire generation.
-
Herbener, Jeffrey
"The Myths of the Multiplier and the Accelerator" in Dissent on Keynes edited by Mark Skousen,
(New York, New York: Prager, 1992) pp. 73 - 88.
-
Mises, Ludwig von
The Theory of Money and Credit,
(Indianapolis, Indiana: LibertyClassics, 1953) pp. 458 - 459.
-
Hayek, F. A.
Unemployment and Monetary Policy,
(San Francisco: The Cato Institute, 1979) pp. 1 - 20.
-
Sennholz, Hans
The Politics of Unemployment,
(Spring Mills, Pennsylvania: Libertarian Press, Inc., 1987) pp. 104 - 107.
-
Skousen, Mark
Economics on Trial,
(Homewood, Illinois: Business One Irwin, 1991) pp. 97 - 99.
-
Rothbard, Murray N.
"Ten Great Myths of Economics" in The Free Market Reader edited by Llewellyn Rockwell,
(Burlingame, California: The Mises Institute, 1988) pp. 26 - 27.
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