This represented 30 percent of the U.S. population covered by UCR participants and accounted for 28 percent of all crime reported to the FBI UCR Program.

Rape, robbery, theft, and motor vehicle theft are defined virtually identically by both the UCR Program and the NCVS. (Prior to 2013, the UCR Program measured a more limited definition of forcible rape against women only, while the NCVS measured a broader definition of rape against both sexes.

The most important distinction between the two is that the UCR reports information regarding crimes known to law enforcement agencies (but cannot reflect unreported crime), while the NCVS measures reported and unreported victimizations, helping researchers identify “the dark figure of crime”—those hidden victimizations …

With NIBRS data, analysts can generate state and national statistics that are not available using the traditional Summary Reporting System (SRS) data. The NIBRS provides a more comprehensive view of crime in the United States, and offers greater flexibility in data compilation and analysis.

The NIBRS is an incident-based reporting system in which agencies collect data on each single crime occurrence. NIBRS data are received from participating local, state, and federal law enforcement agencies having automated records systems.

Examples of UCR problems are as follows: it represents reported crimes, while many crimes are not reported to police; when crimes are reported to police, the crimes may not be recorded; only local and state crimes are reported, not federal crimes or crimes at institutions (e.g., jails and prisons); definitions of …

The goals of the NIBRS are to enhance the quantity, quality, and timeliness of crime data collected by law enforcement and to improve the methodology used for compiling, analyzing, auditing, and publishing the collected crime data.

Implemented to improve the overall quality of crime data collected by law enforcement, NIBRS captures details on each single crime incident—as well as on separate offenses within the same incident—including information on victims, known offenders, relationships between victims and offenders, arrestees, and property …

Local, state and federal agencies generate NIBRS data from their records management systems. Data is collected on every incident and arrest in the Group A offense category. These Group A offenses are 49 offenses grouped in 23 crime categories.

NIBRS is an incident-based reporting system in which law enforcement collects data on each crime occurrence. In reporting data via the traditional SRS, law enforcement agencies (LEAs) tally the occurrences of eight Part I crimes.

The three main sources of crime data include official reports from the police, surveys of victims, and self-reports from offenders. Much of the work assessing how crime is measured focuses on data collected in the United States.

NIBRS Reporting States At a Glance 15 states (Arkansas, Delaware, Idaho, Iowa, Michigan, Montana, New Hampshire, North Dakota, Rhode Island, South Carolina, South Dakota, Tennessee, Vermont, Virginia, and West Virginia) submit all their crime data via NIBRS.

NIBRS 2012, NIBRS Participation by State….Information on the number of crimes known is recorded for eight offense categories, based on the most serious offense reported for each crime incident:

• murder and nonnegligent manslaughter.
• rape.
• robbery.
• aggravated assault.
• burglary.
• larceny-theft.
• motor vehicle theft.
• arson.

Currently, the FBI’s top priorities are: Protect the United States from terrorist attacks. Protect the United States against foreign intelligence operations, espionage, and cyber operations. Combat significant cyber criminal activity.

Group B Offenses They encompass all of the crimes for which the national UCR Program collects data that are not considered Group A offenses. The Group B offense categories listed below are in alphabetical order. Additionally, each offense’s corresponding NIBRS Offense Code follows its name.

There are 23 Group A offense categories making up 49 Group A offenses.

Murder, manslaughter, assault, battery, kidnapping, sex offenses, and domestic violence.

Crimes Against Persons, e.g., murder, rape, and assault, are those whose victims are always individuals. There are 22 Group A offense categories comprised of 46 Group A offenses and 10 Group B offense categories including 10 Group B offenses.

Crimes against property are divided into two groups: destroyed property and stolen property. When property is destroyed, it could be called arson or vandalism. Examples of the act of stealing property is robbery or embezzlement.

Crimes Against Persons, e.g., murder, rape, and assault, are those in which the victims are always individuals. Crimes Against Society, e.g., gambling, prostitution, and drug violations, represent society’s prohibition against engaging in certain types of activity and are typically victimless crimes.