Charles LoefflerAssociate Professor of Criminology
Department of Criminology
University of Pennsylvania
Email: firstname.lastname@example.org, x=cloef
Address: 570 McNeil, 3718 Locust Walk
Philadelphia, PA 19104-6286
My research examines measurement problems in criminology. Much of this work is focused on estimating the life-course consequences of contact with the criminal justice system. These consequences can include changes to the likelihood of employment and future involvement with the criminal justice system. I also work on developing measurement tools for the study of wrongful convictions, imprisonment effects, and gun violence.
Andrew J Holbrook, Charles Loeffler, Seth R Flaxman, Marc A Suchard, “Scalable Bayesian inference for self-excitatory stochastic processes applied to big American gunfire data” Working Paper
Greg Ridgeway, Julie Grieco, Breanne Cave, Charles Loeffler, "A Conditional Likelihood Model of the Relationship Between Officer Features and Rounds Discharged in Police Shootings" Forthcoming Journal of Quantitative Criminology
Michael Chirico, Seth Flaxman, Charles Loeffler, Pau Pereira, “Scalable high-resolution forecasting of sparse spatiotemporal events with kernel methods: a winning solution to the NIJ Real-Time Crime Forecasting Challenge” Annals of Applied Statistics
Charles Loeffler, Jordan Hyatt, and Greg Ridgeway, “Self-Reported Wrongful Convictions Among Prisoners” Journal of Quantitative Criminology
Charles Loeffler, "Pre-Imprisonment Employment Drops: Another Instance of the Ashenfelter Dip?"Journal of Criminal Law & Criminology
Seth Flaxman, Mike Chirico, Pau Pereira, Charles Loeffler, “Scalable high-resolution forecasting of sparse spatiotemporal events with kernel methods: a winning solution to the NIJ 'Real-Time Crime Forecasting Challenge'” [code].
Charles Loeffler and Seth Flaxman, “Is Gun Violence Contagious?” Journal of Quantitative Criminology [code].
Michael Chirico, Robert Inman, Charles Loeffler, John MacDonald, Holger Sieg, “Procrastination and Property Tax Compliance: Evidence from a Field Experiment” NBER Working Paper
Charles Loeffler and Aaron Chalfin, “Estimating the Crime Effects of Raising the Age of Majority: Evidence from Connecticut” Criminology and Public Policy
Simone Ispa-Landa and Charles Loeffler, “Indefinite punishment and the criminal-record: Stigma reports among expungement-seekers in Illinois” Criminology
Charles Loeffler and Ben Grunwald, “Decriminalizing Delinquency: The Effect of Raising the Age of Majority on Juvenile Recidivism” Journal of Legal Studies
Michael Chirico, Robert Inman, Charles Loeffler, John MacDonald, and Holger Sieg, “An Experimental Evaluation of Notification Strategies to Increase Property Tax Compliance: Free-Riding in the City of Brotherly Love” Tax Policy and the Economy