The importance of distinguishing between potential and realized value for IT investments has been recognized by senior managers and IS researchers since some time in the 1980s, when it became apparent that not all IT investments were likely to achieve equivalent levels of return on investment....

This paper attempts to shed light on the puzzling finding that the results of applying the conventional or nonlinear unit root tests to the yen real exchange rates (RERs) in some recent studies appear to be rather sensitive to whether or not including the data of recent decade in the studies. It...