The Authors State That Empirical Tests of Purchasing Power Parity

question 39

Essay

The authors state that empirical tests of purchasing power parity "have, for the most part, not proved PPP to be accurate in predicting future exchange rates." The authors then state that PPP does hold up reasonably well in two situations. What are some reasons why PPP does not accurately predict future exchange rates, and under what conditions might we reasonably expect PPP to hold?

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Definitions:

Marginal Utility

The heightened satisfaction or value achieved by consuming one additional unit of a product or service.

Criminal Behavior

Conduct by an individual that violates societal laws and is subject to sanctions and legal penalties.

Probability

A measure of the likelihood that an event will occur, expressed as a number between 0 and 1, where 1 represents certainty.

Marginal Utility

The additional satisfaction or benefit one receives from consuming one more unit of a good or service.