Crime data sources l.jpg
This presentation is the property of its rightful owner.
Sponsored Links
1 / 14

Crime Data Sources PowerPoint PPT Presentation


  • 855 Views
  • Updated On :
  • Presentation posted in: General

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)

Download Presentation

Crime Data Sources

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


  • Login