The purpose of this data collection was to evaluate the effectiveness of judicial intervention and varying degrees of sanction severity by comparing persons who have been processed at the juvenile or adult level in the justice system with persons who have not. The main research question was whether the number of judicial interventions and severity of sanctions had any effects on the seriousness of offenders' future offenses or the decision to desist from such behavior. Variables include characteristics of the person who had the police contact as well as items specific to a particular police contact. Others are the number of police contacts, seriousness of police contacts, severity of sanctions, and age, cohort, and decade the contact occurred.

The primary purpose of this data collection was to examine the impact of the implementation of sentencing guidelines on the rate of incarcerative and nonincarcerative sentences imposed and on the average length of expected time to be served in incarceration for all offenses as well as for select groups of offenses. The measure of sentence length, "expected time to be served," was used to allow for assumed good time and parole reductions. This term represents the amount of time an offender can expect to spend in prison at the time of sentencing, a roughly equivalent standard that can be measured before and after the implementation of federal criminal sentencing guidelines in 1987. Three broad offense categories were studied: drug offenses, robbery, and economic crimes. Drug offenses include a wide range of illegal activities involving marijuana, heroin, and cocaine. Robbery includes bank and postal robbery (both armed and unarmed) as well as other types of robbery offenses that appear less frequently in the federal system, such as carrying a firearm during the commission of a robbery. Economic offenses include fraud (bank, postal, and other), embezzlement (bank, postal, and other), and tax evasion. Other monthly data are provided on the number of prison and probation sentences for all offenses and by offense categories.

,Dane statystyczne dotyczące prawomocnych skazań z uwzględnieniem rodzaju orzeczonej kary oraz warunkowych umorzeń,

The sentencing data presented in this report reflects the judgement imposed by the court on people that have been found guilty. The data is recorded by count, meaning by each individual cause of action, and each count receives a sentence. Included in this data set are the defendant counts by sentence and year.

The primary purpose of this data collection was to study whether prosecutorial behavior was affected by the implementation of federal criminal sentencing guidelines in 1987. Monthly time series data were constructed on a number of prosecutorial outcomes, representing either discrete decision steps in the processing of criminal cases or the characteristics of cases that passed through the system. Variables include disposition year and month, number of matters initiated, number of cases filed, declined, and dismissed, number of convictions by trial, by jury, and by bench trial, number of guilty pleas, ratio of guilty pleas to cases resolved, and ratio of trials to cases resolved. The collection also provides a series of dichotomous variables to assess the impact of various events on prosecutorial outcomes over time. These events include the Anti-Drug Abuse Act of 1986 (effective November 1986), implementation of the sentencing guidelines (November 1987), Anti-Drug Abuse Act of 1988 (November 1988), United States Supreme Court's decision in the Minstretta case affirming the constitutionality of the sentencing guidelines (January 1989), and Attorney General Thornburgh's memo outlining Justice Department policy on charging and prosecution (March 1989).