We review the evidence that artificial intelligence (AI) is having a large effect on the economy. Across a variety of statistics—including robotics shipments, AI startups, and patent counts—there is evidence of a large increase in AI-related activity. We also review recent research in this...

The 1980s were both the lost decade of growth for much of Latin America and Africa, and the period in which -- through the new growth theory -- macroeconomists returned to the study of growth and development. The new growth theory is production function driven and concerned primarily with steady...

This paper analyzes the structural relationship between policies that distort resource allocation and long-ten growth. It first reviews briefly the Solow model in which steady-state growth depends only on exogenous technological change. Policy distortions do affect the rate of growth in the...

We consider a model of policy choice in which appropriate policies depend on a country's own circumstances, but the presence of a successful leader generates an informational externality and results in too little 'policy experimentation.' Corrupt governments are reined in while honest...

The paper combines insights from the recent research programs on constitutions and economic policy, and on history, institutions and growth. Drawing on cross-sectional as well as panel data, it presents new empirical results showing that the form of democracy (rather than democracy vs....

This paper presents a dynamic stochastic general-equilibrium model with a single friction in all markets: sticky information. In this economy, agents are inattentive because of costs of acquiring, absorbing and processing information, so that the actions of consumers, workers and firms are slow...

Existing models of contagious currency crises are summarized and surveyed, and it is argued that more weight should be put on political factors. Towards this end, the concept of political contagion introduced, whereby contagion in speculative attacks across currencies arises solely because of...