THE REEMERGENCE OF PPP IN THE 1990S

In this paper we investigate purchasing power parity (PPP) in a panel with 17 countries for the period 1972 through 1996. The novel feature of our panel methodology is that results are invariant to the choice o f a benchmark on numeraire currency. In the panel we allow individual country effects in the relation between prices and exchange rates. In this way we can identify the currency pairs for which PPP holds or doe s not hold. We conclude that there is substantive evidence for PPP, al though not to the same extent for every currency. Evidence in favor of PPP is strongest for many exchange rates relative to the Dmark, and w eakest for the Japanese yen. For this currency a trend-like variable, like productivity growth, is missing. (C) 1998 Elsevier Science Ltd. A ll rights reserved.