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...

Researchers, commentators, and politicians have devoted steadily more attention to infrastructure in response to claims that inadequate accumulation of public capital has contributed to substandard U.S. economic growth. Despite this, the link between infrastructure and productivity growth...

What explains the success of Mauritius, a top performer among African countries? It has mostly followed growth-enhancing policies, which can in turn be attributed to sound institutions. But from where did the institutions come? Mauritius chose well around the time of independence in 1968, for...

We define foundational competitiveness as the expected level of output per working-age individual that is supported by the overall quality of a country as a place to do business. The focus on output per potential worker, a broader measure of national productivity than output per current worker,...

PPP-based national accounts have become an important part of the database for macroeconomists, development economists, and economic historians. Frequently used global data come from the Penn World Table (PWT) and the World Bank's World Development Indicators; a substantial fraction of the world...

Ten years ago, donors committed $1.5 billion to a pilot Advance Market Commitment (AMC) to help purchase pneumococcal vaccine for low-income countries. The AMC aimed to encourage the development of such vaccines, ensure distribution to children in low-income countries, and pilot the AMC...

Which is the tighter constraint on private sector investment: weak property rights or limited access to external finance? From a survey of new firms in post-communist countries, we find that weak property rights discourage firms from reinvesting their profits, even when bank loans are available....

We contribute to the long debated issue of whether inward foreign direct investment (FDI) can stimulate investment in developing countries by introducing a novel measure of FDI, based on industry-level data. Our results suggest a positive impact of FDI on total investment – measured as the...

This paper analyzes saving and capital accumulation in a two-good growth model of two market economies in which economic agents optimize with perfect foresight. The goal is to present a model in which short-run dynamics and the steady-state are soundly integrated. We stress the importance of...

This paper proposes a model of diversifiable uncertainty, irreversible investment decisions, and endogenous growth. The detailed microeconomic structure of the model makes it possible to study the general equilibrium effects of obstacles to labor mobility. Labor mobility costs reduce private...