K. Phylaktis et Y. Kassimatis, DOES THE REAL EXCHANGE-RATE FOLLOW A RANDOM-WALK - THE PACIFIC BASIN PERSPECTIVE, Journal of international money and finance, 13(4), 1994, pp. 476-495
In this paper we present evidence that dispels the view that PPP has b
roken down during the 1970s and 1980s. Evidence from unit root tests o
f the real exchange rate indicate that PPP held as a long-run equilibr
ium condition for eight Pacific Basin countries over the period 1974 t
o 1987. In contrast, we find the nominal exchange rates to be non-stat
ionary. Additional evidence, however, shows that strong trend componen
ts bind the nominal exchange rates of that set of countries together.