This paper presents a simple macroeconomic model where government spending affects aggregate demand directly and indirectly, through an expectational channel. Prices are fully flexible and the model is static, so intertemporal issues play no role. There are three important elements in the model:...

This paper proposes a simple macroeconomic model with staggered investment decisions. The expected return from investing depends on demand expectations, which are pinned down by fundamentals and history. Owing to an aggregate demand externality, investment subsidies can improve welfare in this...