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December 4, 2024
Shifting Patterns of Social Interaction: Exploring the Social Life of Urban Spaces Through A.I.
Abstract We analyze changes in pedestrian behavior over a 30-year period in four urban public spaces located in New York, Boston, and Philadelphia. Building on William Whyte’s observational work from 1980, where he manually recorded pedestrian behaviors, we employ computer vision and deep learning techniques to examine video footage from 1979-80 and 2008-10. Our analysis…
December 2, 2024
Why Has Construction Productivity Stagnated? The Role of Land-Use Regulation
Abstract We document a Kuznets curve for construction productivity in 20th-century America. Homes built per construction worker remained stagnant between 1900 and 1940, boomed after World War II, and then plummeted after 1970. The productivity boom from 1940 to 1970 shows that nothing makes technological progress inherently impossible in construction. What stopped it? We present…
April 26, 2024
Human Capital Spillovers and Health: Does Living Around College Graduates Lengthen Life?
Abstract Equally educated people are healthier if they live in more educated places. Every 10 percent point increase in an area’s share of adults with a college degree is associated with a decline in all-cause mortality by 7%, controlling for individual education, demographics, and area characteristics. Area human capital is also associated with lower disease…