5_measuring.crime

5_measuring.crime - police l Perhaps 1/5 of crime reported...

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Click to edit Master subtitle style MEASURING CRIME
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The Criminal Justice Funnel
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Sources of Data l UCR l NCVS l Offender Self-Reports
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Uniform Crime Reports (UCR) l FBI l Since 1930s l Approximately 17,000 agencies covering around 93% of the U.S. population l Only crimes known to police
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The UCR Crime Index l PART 1 CRIMES Violent Crimes l Murder l Rape l Robbery l Aggravated assault Property Crimes l Burglary l Larceny l Motor Vehicle Theft l Arson
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Calculating Crime Violent Crimes S.C.: 33,000 N.C.: 42,000
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Crime Rate CRIME RATE = number of crimes 100,000 population Allows for comparison across time and locations
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7% 32% 60% 1% Murder Rape Robbery Aggravated Assault Distribution of Violent Crimes, 2006
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Crime Rate by Type, 1998-2006 0 1000 2000 3000 4000 5000 6000 7000 1988 1992 1996 2000 2004 Property Crime Rate Violent Crime Rate
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CRIME CLOCK
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Clearance Rate l Arrests and other cases “cleared” l NOT offenses committed l NOT convictions obtained
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Priority Rule (or Hierarchy Rule)
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The Dark Figure of Crime l As much as 1/2 of all crime isn’t reported to
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Unformatted text preview: police l Perhaps 1/5 of crime reported to police isnt reported to the FBI l Police have an incentive to underreport crime and over report clearance rates l The priority rule ignores multiple crime incidents National Incident Based Reporting System l Only covers about 16% of the population NATIONAL CRIME VICTIMIZATION SURVEY (NCVS) l Department of Justice, Bureau of Justice Statistics l Surveys 100,000 individuals living in 50,000 households NCVS--A different picture of crime Crime NCVS Rate UCR Rate Rape 83 32 Robbery 249 142 Agg Assault 460 295 Total 792 469 l 15% of households touched by crime l 24 million victimizations l In 2003, violent crime was down 55% from 1993 l Only about 1/2 violent crime reported to police l Slightly over 1/3 of property crime reported l Victims more likely to be young, male, black, lower income...
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5_measuring.crime - police l Perhaps 1/5 of crime reported...

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