Models with externalities have become increasingly popular for studying both long-term growth and business-cycle fluctuations. Externalities can lead to indeterminacy, allowing self-fulfilling expectations to determine the equilibrium. This paper argues that the importance of indeterminacy might...

The focus of this paper is twofold. First, it examines the impact on work effort of changes in government purchases financed with lump-sum taxes, in a neoclassical framework, with respect to four industrialised countries. Second, it reconsiders the expenditure-work effort relationship in a...

In the contemporary researches on fiscal policy the idea about Nonkeynesian effect is broadly debated. Contrary to the orthodox Keynesian paradigm this theory suggests a stimulating impact of budget consolidations on cumulative activity. The trends towards fiscal restrictions and balanced budget...

Yang's theory of economic specialization under increasing returns to scale (Yang, 2001) is a formal development of the fundamental Smith-Young theorem on the extent of the market and the social division of labor. In this theory, specialization — and thus, the social division of labor — is...

In the paper, the concept of Walrasian sequential equilibrium is developed to formalize the notions of fundamental social and endogenous uncertainties and decentralized social learning. It predicts that social sequential experiments with efficient as well as inefficient network patterns of...