Given that swings
in asset prices can affect both goals, some economists
have argued that central banks can improve macroeconomic
performance by responding directly to asset
prices. Based on simulations from a small economic
model, Cecchetti, et al. (2000) conclude that performance
can be improved if the central bank raises the
short-term nominal interest rate in response to temporary
“bubble shocks” that push the stock price index
above the value implied by economic fundamentals.