The finding of nonlinear cointegration between Asian exchange rates with the corresponding relative prices and aggregate price levels based on Breitung’s (2001) nonparametric rank tests reinforces previous validations of purchasing power parity (PPP) by the parametric testing procedures. Hence, the long-run Asian exchange rates are in equilibrium with the relevant fundamentals as suggested by the PPP hypothesis.
Purchasing power parity; Exchange rates; Cointegration; Nonlinearity; Asian economies