Using the ARFIMA-FIGARCH model, this paper studies the efficiency of the Japanese equity market by examining the statistical properties of the return and volatility of the Nikkei 225. It shows that both follow a long range dependence, which stands against the efficient market hypothesis (EMH)....

This paper empirically evaluates the validity of the term structure of interest rates in a low-interest-rate environment. Applying a time-series method to high-frequency Japanese data, the term-structure model is found to be useful for economic analysis only when interest rates are high. When...

This paper empirically analyzes Japanese long-run exchange rates from several perspectives. Several exchange rate models are considered, including the purchasing power parity, the real interest differential model, and the hybrid models à la Hooper and Morton (1982). A notable feature of the...