This paper proposes modifications to the method of collecting exchange rates for the calculation of the value of the SDR for the purposes of Rule O-2(a). The value of the SDR in terms of the U.S. dollar is determined daily as the sum of the equivalents in U. S. dollar values of the amounts of...

Under the assumption of no arbitrage exchange rate target zone credibility is tested by whether domestic interest rates fall within “rate-of-return bands” between the maximum and minimum home-currency rate of return on a foreign investment absent a devaluation. Under the assumption of...