In this paper, the authors assert that most studies that have sought to determine the validity of purchasing power parity are flawed for two reasons. First, post-1973 data contain, by definition, only a very limited amount of the low-frequency information relevant for examination of long-run parity. Second, the dynamic econometric techniques used to model deviations from parity are typically quite crude with respect to admissible low-frequency dynamics. Both deficiencies are rectified in the present paper, with dramatic results. With a new longer data set, the authors study deviations from parity using long-memory models that allow for subtle forms of mean reversion. Copyright 1991 by University of Chicago Press.
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Volume (Year): 99 (1991) Issue (Month): 6 (December) Pages: 1252-71 Download reference. The following formats are available: HTML
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