The effect of exchange rate uncertainty on US imports from the UK: Consistent OLS estimation with volatility measured by an ARCH-type model

This paper investigates the effect of exchange rate volatility on US-UK bilateral trade flows. As part of econometric problems arising from a generated variable, we consider a special case when an ARCH type auxiliary model is used to measure uncertainty in the exchange rate and discuss a procedure for the correct inference of the OLS estimates of the primary equation in the second stage, which includes the generated variable. By applying this two-step approach, we find a statistically significant, negative impact of exchange rate uncertainty on US imports from the United Kingdom