Despite many “refutations” in empirical tests, the efficient market hypothesis (EMH) remains the central concept of financial economics. The EMH’s resistance to the results of empirical testing emerges from the fact that the EMH is not a falsifiable theory. Its axiomatic definition shows...

This paper employs new estimates of US currency held abroad to determine the degree of unofficial or de facto dollarization that has taken place in key countries around the world. Empirical estimates of foreign currency in circulation permits refined definitions of unofficial dollarization...