Many studies have concluded that changes in US dollar values affect US
prices. However, since exchange rates may reflect underlying economic
conditions, this result may be spurious if those conditions are ignor
ed. Recent advances in time series analysis permitted investigation of
both the short and long term interactions between the US price level
and the yen/dollar exchange rate, taking into account the effects of c
hanges in domestic economic activity, such as income, interest rates a
nd monetary policy. Examination of these interactions helps to determi
ne to what extent the yen/dollar exchange rate impacts the domestic pr
ice level. The finding is that there is no long term relation between
the two variables. In addition, the results suggest that in the short
run, monetary authorities respond to changes in the consumer price ind
ex and Japanese exchange rates; however, the price level does not resp
ond to changes in the exchange rate.