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We evaluate the validity of commonly used hospital quality indicators using hospital closures that reallocate large numbers of patients to hospitals of different quality. Using…
HKS Working Paper No. RWP25-005
A growing body of scholarship investigates the extent to which national partisan polarization filters down to the local level. There has been little evidence, however, on: (1) the…
Vol. 7, Issue 9
Waiting times for specialist visits in the United States are increasing, and many organizations are responding by seeking to hire more physicians. However, regional data on the…
An analysis of FDA-approved drugs reveals uneven timing and concentration of revenue life cycles across modalities and therapeutic areas, offering evidence to guide innovation…
Vol. 123, Issue 33, Pages e2604542123
Are cities in emerging economies poverty traps or engines of opportunity? We use 13 y of linked employer–employee data covering all formal workers in Brazil to explore the…
HKS Working Paper No. RWP26-008
The North South Rail Link (NSRL) is a proposed underground tunnel connecting Boston’s North and South Stations, eliminating the one-mile gap that divides the regional rail network…
HKS Working Paper No. RWP26-007
Seventy-six percent of Americans identify as sports fans, and sixty-three percent consider themselves passionate fans. We find that this shared identity powerfully reduces…
It is challenging to know what target to aim for in early education policy. As of January 2026, 53 percent of Massachusetts children who were too young to be in kindergarten were…
It is challenging to know what target to aim for in early education policy. As of January 2026, 53 percent of Massachusetts children who were too young to be in kindergarten were…
ICE violence is a feature, not a bug, of our law enforcement system.