It is generally believed that for the power of unit root tests, only the time span and not the observation frequency … methods will yield power gains in the presence of fat tails and persistent volatility clustering, and the strength of these … features (and hence the power gains) increases with the observation frequency. This is illustrated using both Monte Carlo …

all variables proposed by theory, despite a broad set of fixed effects (FE). We find that both REERs are important and … multilateral resistances. Untangling normalization helps to get a better view of what is still unexplained by theory. …

persistence of real and nominal exchange rate movements and thusin some measure resolves Rogoffs (1996) purchasing power parity …