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| Interrupted Time Series in Crime Analysis× | Crime Displacement and Diffusion Analysis× | |
|---|---|---|
| Fagområde | Criminology | Criminology |
| Familie | Process / pipeline | Process / pipeline |
| Oprindelsesår≠ | 1980 | 2003 |
| Ophavsperson≠ | George E. P. Box & George C. Tiao (intervention analysis); David McDowall, Richard McCleary, and colleagues (criminological text) | Kate Bowers & Shane Johnson |
| Type≠ | Quasi-experimental evaluation of a policy effect on a time series | Quasi-experimental spatial impact assessment of crime prevention |
| Oprindelig kilde≠ | McDowall, D., McCleary, R., Meidinger, E. E., & Hay, R. A. (1980). Interrupted Time Series Analysis. Sage Publications. ISBN: 9780803914933 | Bowers, K. J., & Johnson, S. D. (2003). Measuring the geographical displacement and diffusion of benefit effects of crime prevention activity. Journal of Quantitative Criminology, 19(3), 275–301. DOI ↗ |
| Aliasser | Crime Intervention Analysis, ITS Crime Evaluation, Quasi-Experimental Time Series for Crime, Pre-Post Crime Trend Analysis | Crime Displacement Analysis, Diffusion of Benefits Analysis, Weighted Displacement Quotient, WDQ Analysis |
| Relaterede | 4 | 4 |
| Resumé≠ | Interrupted time series (ITS) analysis evaluates whether a law, policy, or intervention changed the course of a crime series. By modeling the level and slope of crime before and after a dated 'interruption' — a gun-control law, a policing crackdown, a sentencing reform — it tests whether the series jumped or bent at that moment relative to its prior trend. Box and Tiao formalized intervention analysis in 1975, and McDowall, McCleary, and colleagues brought the method to criminology in their widely used 1980 monograph. | Displacement and diffusion analysis evaluates what happens around a crime-prevention intervention: does crime simply move to nearby areas, times, or targets (displacement), or do the benefits spill over so that crime also falls in surrounding untreated areas (diffusion of benefits)? Bowers and Johnson's weighted displacement quotient (WDQ) provides a simple, widely used metric that compares pre/post crime change in a target area, a surrounding buffer, and a control area. |
| ScholarGateDatasæt ↗ |
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