เปรียบเทียบวิธี

	Crime Displacement and Diffusion Analysis	Situational Crime Prevention Analysis
สาขาวิชา	Criminology	Criminology
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	2003	1997
ผู้ริเริ่ม	Kate Bowers & Shane Johnson	Ronald V. Clarke
ประเภท	Quasi-experimental spatial impact assessment of crime prevention	Opportunity-reduction framework for crime prevention
แหล่งต้นตำรับ	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.	Clarke, R. V. (Ed.). (1997). Situational Crime Prevention: Successful Case Studies (2nd ed.). Harrow and Heston. ISBN: 9780911577389
ชื่อเรียกอื่น	Crime Displacement Analysis, Diffusion of Benefits Analysis, Weighted Displacement Quotient, WDQ Analysis	SCP, Situational Prevention, Opportunity-Reduction Framework, Twenty-Five Techniques of Situational Crime Prevention
ที่เกี่ยวข้อง	4	4
สรุป	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.	Situational crime prevention (SCP) is a framework, developed by Ronald Clarke, for reducing crime by changing the immediate situations in which it occurs rather than the dispositions of offenders. It diagnoses the specific opportunities that make a crime easy, rewarding, or low-risk and then applies twenty-five practical techniques organized under five mechanisms: increase effort, increase risk, reduce rewards, reduce provocations, and remove excuses.