Current technological developments in a number of industries, such as the rise of artificial intelligence and innovations ...

We analyze the effect of California's $20 fast food minimum wage, which was enacted in September 2023 and went into effect in April 2024, on employment in the fast food sector. In unadjusted data from ...

This paper considers why fertility has fallen to historically low levels in virtually all high-income countries. Using cohort data, we document rising childlessness at all observed ages and falling ...

Does industrial concentration shape the life and death of cities? We identify settlements from historical maps of England and Wales (1790–1820), isolate exogenous variation in their late 19th-century ...

In this paper we provide new evidence on the health spillover effects of health shocks within couples. Using administrative data from the Netherlands and a matching event-study framework, we estimate ...

We present a new model of competition between digital media platforms with targeted advertising. The model adds new insights around how user heterogeneity and overlap, along with user and advertiser ...

In contracting out, monitoring is an important policy tool to extract information on firm quality and incentivize quality provision. This paper examines a central quality inspection of nursing homes, ...

In addition to working papers, the NBER disseminates affiliates’ latest findings through a range of free periodicals — the ...

We study the effects of state hospital regulations intended to increase breastfeeding by requiring certain care standards during the postpartum hospital stay. Policy adoption increased breastfeeding ...

Steve Jobs described computers as “bicycles for the mind,” a tool that allowed people to dramatically leverage their capabilities. This paper presents a formal model of cognitive tools and ...

We conducted a large-scale field experiment in Granada, Spain, to assess the motivating effect on blood donation of matching each attempt to donate with a charitable contribution pledge for children ...

Credit scores are a primary screening device for the allocation of credit, housing, and sometimes even employment. In the data, credit scores grow and fan out with age; at the same time, income and ...