inflation vs international business ppt
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Please provide me ppt on inflation vs international business
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INFLATION AND INTERNATIONAL TRADE
International trade and trade policy are difficult enough to understand
when price levels remain relatively constant. But when rapid
or chronic inflation are added, most of us find that whatever grip
we have on economic principles begins to slip away. This is because
general price inflation reflects changes in the level and distribution of
real income within countries and across national boundaries. Inflation
also tends to change currency exchange rates and international
balance of payments accounts.
This paper examines briefly some of the major ways in which
inflation can influence trade among nations.
Inflation is a sustained increase in the general price level of a
national economy measured either at the retail or wholesale level.
The annual rate of change in this price level, commonly expressed
in index numbers, is the inflation rate.
Constant Inflation Rates
First imagine a curious world in which all trading nations display
rapid but equal inflation rates. No changes occur anywhere in relative
prices-all conceivable price and cost ratios stay constant over time.
Since currency exchange rates are really price relatives, no exchange
rates would change in response to this inflation. Thus, no priceinduced
changes in imports, exports, interest rates, capital flows, or
balance of payments would occur.
Such a world would be uninteresting from our point of view unless
this constant international inflation rate were accompanied by unequal
rates of change in real income. These could emerge because of
differential rates of growth in real output across international borders.
Unequal changes in real income could induce changes in commodity
trade and foreign exchange through demand shifts, but these
would not be inflation phenomena as such. Now consider the more
relevant case involving differential inflation rates occurring from one
trading nation to another.
Differential Inflation and Fixed Exchange Rates
For whatever underlying reasons, imagine that at least two major trading nations display substantially different internal inflation rates
affecting prices of both traded and non-traded goods. If the rate of
exchange of one nation's currency for that of the other is fixed, relative prices across the border would be changing at a rate equal to
the difference between the two inflation rates. For example, if the
U.S. inflation rate is 10 percent and the West German rate is 7 percent,
then relative prices for U.S. goods would be rising by 3 percent
per year in terms of German currency. Similarly, relative prices for German goods in U.S. currency would be falling at 3 percent
per year.
With fixed exchange rates, the exports of the rapidly-inflating nation
would tend to dwindle, and their imports would tend to rise.
In our example, this adjustment would dampen inflation in the
United States and heighten it in Germany if large balance of pay- ments surpluses and deficits are not allowed to accumulate and if
trade is responsive to price change.
This theoretically-tight, international linkage of economic activity and price levels is a major advantage seen by supporters of the gold standard and other types of fixed exchange rates. They favor the automatic
external discipline on economic activity and inflation which
such schemes provide. With fixed currency exchange rates, inflation
is clearly an export commodity.
How easily and rapidly inflation can move from nation to nation
under fixed exchange rates depends upon the importance of trade in
total economic activity and the degree to which exports and imports respond to international price differences. The more important trade
is and the more responsive demand and supply are to price changes, the more readily inflation will surge from one country to another.
Differential Inflation and Flexible Exchange Rates
Completely fixed exchange rates are one polar extreme. Is there a
link between inflation and trade at the other extreme where exchange
rates are fully flexible? Here we can turn to the venerable "purchas- ing power parity" doctrine of economic theory which dates back to
the work of the Swedish economist Gustav Cassel at the end of
World War I. This principle shows relationships that should exist
among freely-determined, equilibrium currency exchange rates when
two or more nations display different rates of internal price inflation
and their international payments are in balance.
It is beyond the scope of this paper to trace the history of this
principle or to provide a rigorous discussion of its derivation. The
basic relationship can be stated as follows for any pair of nations.
(1) rt = ro(Plt/P2t)

where Pit is nation #l's price level in period t (relative to some
base); P2t is nation #2's price level in period t (relative to the same
base); ro is the base-period exchange rate expressed as the number of
units of nation #l's currency that a single unit of #2's currency will
buy; and rt is the equilibrium exchange rate for period t. In terms of
annual rates of change, the purchasing-power parity relation of equation
(1) can be written
(2) r* = P -P2
where r* is the annual rate of change in the equilibrium exchange
rate; P* and P2 are the annual inflation rates in nations #1 and #2
respectively.
Since currency exchange rates are really price relatives of one unit
of money in terms of another, they can be linked to differential
inflation rates in the same way as the other price relatives. Returning
to our previous example, compare the United States, with a 10 percent
inflation rate, to West Germany, with a 7 percent rate. Under
the purchasing power parity principle, the number of dollars that a
given amount of German marks will buy on world money markets
should increase at approximately 3 percent annually. Similarly, the
number of marks obtainable per dollar will deteriorate at 3 percent
annually.
The next step in this line of reasoning is to consider the trade
impacts of flexible exchange rate adjustments occurring in response
to inflation. Fully-adjusting currency exchange makets would completely
neutralize the changes in relative prices implied by differential
inflation rates. Hence, the purchasing power parity doctrine with
flexible exchange rates teaches that we should expect no systematic
international trade changes to flow from differential inflation rates
themselves.
However, if a time lag exists in the rate at which exchange values
adjust in response to differential inflation, then the nation with the
more rapid inflation will find its exports slipping and its imports
rising. Because the value of its currency will not be falling fast
enough to maintain equal commodity price relatives. So the net
impact that price inflation itself has on international trade hinges
upon where actual currency exchange markets fit between the
polar extremes of fixity and full flexibility.
The Current Situation
For the last 10-15 years, the world's trading nations have been
edging away from fixed rates toward more flexible, market-determined
exchange rates. Governments still intervene heavily in money
markets to influence currency values, and currencies of some nations
are still welded together in fixed-value blocks.

So on one hand, it is a mistake to view today's exchange rates
as being determined in a fully-flexible system. Yet the relative values
of major reserve currencies and currencies of many important trading nations are now more free to change in response to market forces
than at any other time in this century.
Experts in this field agree that currency exchange rates are influenced
in today's world by factors other than price level changes. Government intervention in exchange markets occurs continually. Private currency speculation doubtless disturbs basic trends in exchange
rates. International flows of financial capital and govern- mental manipulation of interest rates powerfully affect exchange rates in ways quite distinct from traditional transactions in goods and
services. Differential rates of price inflation among and between
traded and non-traded goods within a major trading nation can affect
exchange rates. These factors, operating in both the short and long
run, can override and obscure the linkages between inflation and
exchange rates suggested by the purchasing power parity theory.
A recent econometric study by Charles Freedman, Bank of Canada,
focused on the exchange rate between the U.S. dollar and the
Canadian dollar. He found that about 85-90 percent of the quarterly fluctuation in this exchange rate between 1971 and 1977 can be
attributed to changes in the following factors, listed here in order of
their statistical importance:
1. Ninety-day interest rate differential between Canada and U.S.
for commercial paper.
2. Price index ratio of export goods to import goods. 3. Business cycle position of Canada relative to U.S. (Canadian minus U.S. unemployment rates).
4. Inflation differential between U.S. and Canada.
5. Net long-term capital flows into Canada relative to GNP.
Note that the inflation differential was only one of many factors
at work on this particular exchange rate-and not the most important in this period. However, there are at least two broader studies (one by Yeager of the University of Virginia in 1958, and one by Meyers of the University of Minnesota in 1977) which suggest that, for
earlier historical periods and for several nations taken together, the
purchasing power parity hypothesis could not be rejected as a determinant
of equilibrium exchange rates.
Table 1 summarizes recent inflation rates for several major trading nations. It is clear from these data that differential inflation is occurring
among trader nations. If the purchasing power parity relationship
were dominant in exchange markets, we would expect to see
the U.S. dollar appreciating with respect to the currencies of France, Italy, and the United Kingdom but depreciating with respect to
Japan and Germany. The U.S.-Canada exchange rate should be about
constant. Table 2 illustrates the mixed nature of the actual situation
over the 1976-79 period.
A dominant page link between differential inflation and exchange rates
would be reflected in similar signs (both plus or both minus) on the
rates of change in exchange rates and prices. Such a relation, from
the U.S. viewpoint, does occur with respect to Japan and Germany,
two of our major trading partners. Opposite signs occur for the other
nations. Even with Japan and Germany, widely different values of
the change in exchange rates and the inflation differentials occur.
This indicates that in recent months and years the purchasing power
parity relation has been heavily obscured by other factors. In general,
these forces tend to push down the U.S. dollar's value relative to
some other important currencies. Many observers feel that international
capital flows, changes in reserve asset holding behavior, and
government interventions are largely responsible.
Another View of the Purchasing Power Parity Relation
The traditional purchasing power parity theory implies that the
dominant flow of causation is from price levels to currency exchange
rates. It is probably at least as correct to argue that in today's highly interdependent world inflation rates and exchange rates are mutually
determined. Many governments attempt to alter inflation rates and
exchange values via economic policy maneuvers, including direct
market intervention.
To illustrate, consider a simple rearrangement of equation (2)
(3) P= r* + P*
1 2
It is suggested that the inflation rate for one nation is affected by the inflation rate in another nation and the rate of change in the
currency exchange rate. Policymakers in one nation probably have
little or nothing to say about the inflation rate in another nation, but they can do something about the exchange value of their own
currency. They can "overvalue" it by using foreign exchange holdings
to buy their own currency and thereby support its price. Or they
can "undervalue" it by acquiring foreign exchange through price depressing
disposals of their own currency.
Nations which exert central control over all foreign currency transactions
can overvalue or undervalue their own money by simple administrative
decisions. In either case, the inflation rate in one nation
can be influenced if the theoretical relation holds in practice.
For instance, downward pressure on inflation rates can be achieved
by holding down the annual rate of change in the exchange rateby
overvaluing the currency of a nation. This will dampen exports and encourage imports. On the other hand, if the currency of a
nation is systematically undervalued, upward pressure will be applied
to its inflation rate as its exports appear cheaper on world markets
and as its imports become relatively more expensive. Looking at matters
this way gives us some insight into why policymakers in nations
with high rates of inflation tend to overvalue their currencies by resisting
devaluation at least partly on the grounds that it would add
further fuel to domestic inflationary fires. And resulting balance
of payments problems are less obvious.
Concluding Comments
As unsatisfactory as our economic theory is about the root causes
and cures of chronic inflation, we know that it is not a "natural"
phenomenon like the force of gravity or the evolution of plant and
animal species. Moreover, inflation does not proceed equally through- out an economy as we have assumed here. Particular changes in real
or monetary factors push up specific prices, wages, or interest rates.
These specific changes spread and ripple across an economy through
the processes of private and public substitution, negotiation, and administrative
reaction. Over time, the net result of these differing
actions and reactions is the inflation rate.
Inflation, therefore, is not something as fundamental or inherent
to human society as, say, the speed of light is to the physical world.
Inflation, as a general economic phenomenon, is comprehensible and
manageable only to the extent that its underlying forces are identifiable
and subject to control. Thus, the major way that general
inflation affects international trade is through its relation with currency
exchange rates. Changing currency values alter relative prices
and costs to simulate or dampen international transactions in goods
and services.
To dig beneath these general tendencies requires that we identify
and analyze the forces which underlie and drive modern international
inflation. These include the systematic escalation of energy prices,
intermittent raw material shortages and inventory speculation, fiscal
and monetary actions by various governments, rising real incomes,
non-competitive markets, and people's expectations about future
inflation. Each is clearly the subject of another paper.
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