This is sometimes referred to as the short-run stabilization objective for monetary policy. A central issue for monetary policy is how to balance the dual objectives of price stability and output stabilization and how explicit to be about the commitment to these dual objectives. Both theoretical and, especially, empirical macroeconomics have established the existence of an inescapable trade-off affecting the conduct of monetary policy.
The trade-off is between the variability of inflation around its target (zero or some low rate) and the variability of output around its target (the full-employment level of output or potential output). Autonomous increases or decreases in aggregate spending push output and inflation in the same direction relative to their targets and, therefore, do not bring this trade-off into play.