DEMAND FOR MONEY AND CURRENCY SUBSTITUTION: THE CASE OF PORTUGAL

The existence of a stable relation between the demand for real cash balances and some few variables relating it to real economic activity is one of the cornerstones of the monetarist approach. Such a relation permits us not only to analyze the impact of monetary change on economic activity but, since it is stable, it also has important predictive content. A better insight is then possible on the analysis of the effects of monetary policy. On this basis, it has been shown that money really matters and that the money supply is, with regard to economic stability, a powerful but also a dangerous weapon when heedlessly used by governments.