Proponents of an aggregation theoretic approach to money demand argue that simple-sum measures do not capture the theoretical notion of money, especially for broad monetary aggregates. European monetary aggregation, which uses indices for monetary services, seems attractive because these indices...

Monetary policy space remains constrained by the lower bound in many countries, limitingthe policy options available to address future deflationary shocks. The existence of cashprevents central banks from cutting interest rates much below zero. In this paper, we considerthe practical feasibility...