Long-term effects of the Moving to Opportunity residential mobility experiment on crime and delinquency

Objectives

Using data from a randomized experiment, to examine whether moving youth out of areas of concentrated poverty, where a disproportionate amount of crime occurs, prevents involvement in crime.

Methods

We draw on new administrative data from the U.S. Department of Housing and Urban Development’s Moving to Opportunity (MTO) experiment. MTO families were randomized into an experimental group offered a housing voucher that could only be used to move to a low-poverty neighborhood, a Section 8 housing group offered a standard housing voucher, and a control group. This paper focuses on MTO youth ages 15–25 in 2001 (n = 4,643) and analyzes intention to treat effects on neighborhood characteristics and criminal behavior (number of violent- and property-crime arrests) through 10 years after randomization.

Results

We find the offer of a housing voucher generates large improvements in neighborhood conditions that attenuate over time and initially generates substantial reductions in violent-crime arrests and sizable increases in property-crime arrests for experimental group males. The crime effects attenuate over time along with differences in neighborhood conditions.

Conclusions

Our findings suggest that criminal behavior is more strongly related to current neighborhood conditions (situational neighborhood effects) than to past neighborhood conditions (developmental neighborhood effects). The MTO design makes it difficult to determine which specific neighborhood characteristics are most important for criminal behavior. Our administrative data analyses could be affected by differences across areas in the likelihood that a crime results in an arrest.     

Identification of Protected Avian Species Using a Single Feather Barb*,†

Abstract: We report on the unambiguous identification of protected avian species from as little as one barb of a feather. Many avian species are protected by international agreements and national legislation, yet they are traded illegally because of their high value. Two sections of the avian mitochondrial genome were chosen to identify bird species, being a 561‐bp section of ND2 gene and a 921‐bp section of the ND5 gene. Two different DNA extraction methods were compared for their ability to reliably isolate sufficient DNA to be detected in a subsequent PCR. Using a commercial kit supplied by QIAGEN, a complete sequence was obtained from one barb for the ND2 gene, whereas two barbs were required to reliably sequence the 921‐bp section of the ND5 gene. The process worked on all species tested using feathers from archival museum specimens, resulted in minimal damage to the specimen and can readily be adopted by a forensic science laboratory.     

MEGA-EVENTS, URBAN DEVELOPMENT, AND PUBLIC POLICY

As cities compete for jobs and capital in the context of limited federal aid and increasing global economic competition, a new and potentially high‐risk public policy strategy for stimulating local economic growth has emerged. This megaevent strategy entails the quest for a high‐profile event to serve as a stimulus to, and justification for, local development. How and why do American cities commit their resources to seeking a mega‐event? And, if a city lands a megaevent, how does that event affect local development policy? To address these questions, we examine the experiences of three American cities which have bid for and organized the Olympics in the contemporary era: Los Angeles, Atlanta, and Salt Lake City.     

The First Successful Use of a Low Stringency Familial Match in a French Criminal Investigation

We describe how a very simple application of familial searching resolved a decade‐old, high‐profile rape/murder in France. This was the first use of familial searching in a criminal case using the French STR DNA database, which contains approximately 1,800,000 profiles. When an unknown forensic profile (18 loci) was searched against the French arrestee/offender database using CODIS configured for a low stringency search, a single low stringency match was identified. This profile was attributed to the father of the man suspected to be the source of the semen recovered from the murder victim Elodie Kulik. The identification was confirmed using Y‐chromosome DNA from the putative father, an STR profile from the mother, and finally a tissue sample from the exhumed body of the man who left the semen. Because of this identification, the investigators are now pursuing possible co‐conspirators.     

Natural Resource Damages from Oil Spills in the United States

Large oil spills in the United States often result in some natural resource damages (NRD), which arise from injuries to natural resources and losses of their services. We use multiple regression analysis to identify the factors that explain variations in NRD settlements, including: spill amount, whether threatened and endangered species were injured, whether recreation closures occurred, some temporal factors, some geographic factors, and some characteristics of the government agencies pursuing NRD. Then, we use our preferred statistical model to predict the median and confidence interval for the NRD settlement for future oil spills with specified characteristics. Such predictions for future spills will be helpful in determining the appropriate scale for the NRD assessment and for setting aside reserves for settlement.