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Explaining Developmental Crime Trajectories at Places: A Study of "Crime Waves" and "Crime Drops" at Micro Units of Geography in Seattle, Washington, 1989-2004 (ICPSR 28161)

Released/updated on: 2013-08-05

Geographic coverage: Seattle, United States, Washington

Time period: 1989-01-01--2004-01-01

This study extends a prior National Institute (NIJ) funded study on mirco level places that examined the concentration of crime at places over time. The current study links longitudinal crime data to a series of other databases. The purpose of the study was to examine the possible correlates of variability in crime trends over time. The focus was on how crime distributes across very small units of geography. Specifically, this study investigated the geographic distribution of crime and the specific correlates of crime at the micro level of geography. The study reported on a large empirical study that investigated the "criminology of place." The study linked 16 years of official crime data on street segments (a street block between two intersections) in Seattle, Washington, to a series of datasets examining social and physical characteristics of micro places over time, and examined not only the geography of developmental patterns of crime at place but also the specific factors that are related to different trajectories of crime. The study used two key criminological perspectives, social disorganization theories and opportunity theories, to inform their identification of risk factors in the study and then contrast the impacts of these perspectives in the context of multivariate statistical models.

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Partners in Crisis: Improving Police Response to Individuals in Moments of Crisis by Providing Service Alternatives, Roanoke Valley, Virginia, 2022 (ICPSR 39294)

Released/updated on: 2025-05-14

Geographic coverage: United States, Roanoke, Virginia

Time period: 2022-05-01--2022-12-31

This project was an experimental evaluation of a collaborative partnership among the Center for Evidence-Based Crime Policy at George Mason University (CEBCP-GMU), Roanoke Police Department (RPD), Roanoke County Police Department (RCPD), Salem Police Department (SPD), and Vinton Police Department (VPD) as well as Blue Ridge Behavioral Healthcare (BRBH) in Roanoke Valley region of Virginia to conduct a place-based cluster randomized controlled trial (RCT) to evaluate the effects of the co-responder model on subsequent outcomes of individuals who were experiencing a crisis and involved in mental health-related calls for service. Responding to incidents involving individuals with mental illness has been a challenge for police officers.

While co-response teams have been embraced as an effective police response strategy, most prior evaluation studies on co-response teams focused on outcomes that are not directly related to individuals' subsequent mental health state. Additionally, the lack of experimental research hinders our ability to draw causal conclusions on the effects of co-response teams. To address this knowledge gap, this study evaluated the effectiveness of co-response teams on hospitalization outcomes of individuals in crisis using a place-based randomized controlled trial in southwest Virginia.