Crime data sources
1 / 14

Crime Data Sources - PowerPoint PPT Presentation

  • Updated On :

Crime Data Sources. Police reports, victimization, and self-report data. Sellin’s Dictum. “The value of a crime for index purposes decreases as the distance from the crime itself in terms of procedure increases” Thorsten Sellin, 1931. Sources of Crime Statistics. Uniform Crime Reports (UCR)

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
Download Presentation

PowerPoint Slideshow about 'Crime Data Sources' - katina

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Crime data sources l.jpg

Crime Data Sources

Police reports, victimization, and self-report data

Sellin s dictum l.jpg

Sellin’s Dictum

“The value of a crime for index purposes decreases as the distance from the crime itself in terms of procedure increases”Thorsten Sellin, 1931

Sources of crime statistics l.jpg
Sources of Crime Statistics

  • Uniform Crime Reports (UCR)

  • National Crime Victimization Surveys (NCVS)

  • Self-Report Data (SRD)

Uniform crime reports part 1 offenses l.jpg
Uniform Crime ReportsPart 1 Offenses

  • “Serious illegal acts that occur with sufficient frequency to provide an adequate basis for comparison”

Crimes not included in the ucr part 1 crime index l.jpg
Crimes Not Included in the UCR Part 1 Crime Index

Reason: they do not come to the attention of police often enough.

Becoming a ucr crime statistic l.jpg

Step 1:

Step 2:

Police must decide…

Step 3:

Step 4:

Becoming a UCR Crime Statistic

Reporting crimes to the police l.jpg
Reporting Crimes to the Police

  • People are MORE likely to report if…

  • People are LESS likely to report if…

Officer discretion l.jpg
Officer Discretion

  • Officer discretion influenced by offense and offender characteristics

Recording of crimes by police l.jpg
Recording of Crimes by Police

  • Characteristics of the offense

  • Characteristics of offender

  • Characteristics of the victim

Strengths of the ucr l.jpg
Strengths of the UCR

  • National

  • Permits comparisons

  • Links to other sources

Weaknesses of the ucr l.jpg
Weaknesses of the UCR

  • Street crimes

  • Reactive crime reporting by citizens

  • Officer discretion

  • Susceptible to political pressure to over or under-report

The national crime victimization survey ncvs l.jpg
The National Crime Victimization Survey (NCVS)

  • Conducted by the U.S. Bureau of Census every 6 months, households remain up to 3 years

Self report data l.jpg
Self-Report Data

  • Unofficial statistics

  • Gets at the “dark figure” of crime

  • Provides information on causes of crime from offender’s perspective

Ethical issues in self report studies of violent crime l.jpg
Ethical Issues in Self-Report Studies of Violent Crime

  • Exchange confidentiality for honesty

  • Ask subjects not to talk about planned violence