Social and Behavioral Sciences Commons^™

Essays On The Economics Of Law And Crime, Zachary J. Porreca

Graduate Theses, Dissertations, and Problem Reports

The first chapter examines the connection between gentrification and urban violence. I demonstrate a positive and plausibly causal relationship between urban redevelopment and gun violence in Philadelphia. As the underlying mechanism, I focus on gentrification's displacement effect on local drug markets. Treating the city as a spatial network of city blocks and using two-way fixed effects differences-in-differences estimators, I show the gentrification of one block increases violence across the surrounding neighborhood. I find that some 2,400 (8%) of Philadelphia's shootings between the years 2011 and 2020 can be attributed to spillover effects from the gentrification of drug blocks. This effect …

Three Essays In Applied Microeconomics: Philly Style, Alexander Christian Marsella

Graduate Theses, Dissertations, and Problem Reports

My dissertation analyzes several contemporary policy-based and institutional occurrences in an urban setting to help guide further advancements in reducing violence, drug overdose deaths, and other unhealthy behaviors that city governments look to curb. Several recent developments in Philadelphia offer a promising setting for studying policies that have broad implications.

Chapter 1 examines the effect of the West Philadelphia Promise Zone initiative on violent crime rates in a high-crime area of West Philadelphia, where a series of educational, public-safety, and quality-of-life improvement grants were disbursed from 2014 onward. My difference-in-differences analysis with two-way fixed effects and cluster bootstrapped standard errors …