We extend a standard New Keynesian model to incorporate heterogeneity in spending opportunities and two sources of (potentially time-varying) credit spreads, and to allow a role for the central bank's balance sheet in equilibrium determination. We use the model to investigate the implications of...

We extend a standard New Keynesian model to allow an analysis of "unconventional" dimensions of policy alongside traditional interest-rate policy. We find that quantitative easing in the strict sense is likely to be ineffective, but that targeted asset purchases by a central bank can instead be...

We extend the basic (representative-household) New Keynesian [NK] model of the monetary transmission mechanism to allow for a spread between the interest rate available to savers and borrowers, that can vary for either exogenous or endogenous reasons. We find that the mere existence of a...