This paper offers evidence of the asymmetric effect of monetary policy on e
conomic activity. First, asymmetric adjustment is captured in three macroec
onomic relationships for investment, the consumer price deflator, inventori
es and house prices. These relationships are then embedded in a small macro
econometric model of the UK economy. Simulations on this model allow us to
trace through the interactions of these asymmetries so that a monetary shoc
k-measured by a change in interest rates-affects output and inflation in th
e short run in ways dependent both upon the sign of the shock and the initi
al state of the economy. A monetary easing has significantly larger effects
on inflation when the economy is close to capacity compared with when it i
s in recession. These effects are captured by intrinsic asymmetries in the
model, due to the use of the logarithm of interest rates and the logarithm
of unemployment in the wage equation, as well as the asymmetries coming fro
m the non-linearities which we have introduced explicitly.