Testing Uncovered Interest Rate Parity for Pakistan

This paper provides direct empirical assessment of Uncovered Interest Rate Parity (UIP) for Pakistan. To Test UIP, wide range of maturities have been used and for estimation purpose, we used Johansen cointegration and Dynamic Ordinary Least Square (DOLS). We find that UIP does not hold for short to medium term maturities. However for the long term maturities i.e., 10-year, the result showes that the UIP holds. It means the exchange rate is better predicted by the long term interest rates. These findings suggest that the interventions in the foreign exchange market distort the price discovery mechanism of the foreign currency in the short to medium term. In the long run, however, the market fundamentals dictate the price discovery guiding the exchange rate to converge to its long run equilibrium. Keywords: UIP, Johansen Cointegration, DOLS, Foreign Exchange Market, Price Discovery Mechanism.

Uncovered Interest Rate Parity and Investment: A Tripartite Analysis of Nigeria, United States of America and China

This study comparatively examined the validity of the theory of uncovered interest rate parity (UIP) for Nigeria and United States of America (USA) and for Nigeria and China, using USA and China as anchor countries respectively. The study also examined the impact of the theory (UIP) on investment in Nigeria. Using annual time series data spanning from 1980-2017, the pre-estimation test (Augmented Dickey-Fuller Unit root test) was conducted. Given that the variables were integrated of order one and order zero, Autoregressive Distributed lag bound testing approach (ARDL) and Toda- Yamamoto causality test were employed for analysis. The ARDL result indicates that there is no long run relationship between Nigeria and USA but there is a long run relationship between Nigeria and China. By implication, the theory of UIP does not hold between Nigeria and USA but between Nigeria and China, the theory of UIP holds. Also, the result of Toda-Yamamoto indicates that the theory of UIP positively and significantly impacts on investment in Nigeria. The study recommended that the government should strengthen her economic relationship especially with China so as to encourage more investments by China in Nigeria.