The likelihood that child pornography offenders will later commit a contact sexual offense is unknown. In the present study, we identified a sample of 201 adult male child pornography offenders using police databases and examined their charges or convictions after the index child pornography offense(s). We also examined their criminal records to identify potential predictors of later offenses: ...

In the standard economic theory of crime and punishment, a risk-neutral individual will commit an offense if and only if his private benefit exceeds the expected sanction for doing so. To the extent that several individuals simultaneously choose whether or not to commit the offense, it is assumed that their decisions are independent of each other. The purpose of this paper is to investigate a s...

We set up a game theoretic framework to analyze a wide range of situations from team sports. A fundamental idea is the concept of potential; the probability of the offense scoring the next goal minus the probability that the next goal is made by the defense. We develop categorical as well as continuous models, and obtain optimal strategies for both offense and defense. A main result is that the...

Considerable research has found support for the relationship between criminal offending in adolescence and criminal offending in adulthood. Estimating the strength and nature of the relationship has been facilitated by the methodological advances that have been made over the past decade. We add to this literature and describe and apply various prediction methods to examine the extent to which a...

This article introduces the use of regression models based on the Poisson distribution as a tool for resolving common problems in analyzing aggregate crime rates. When the population size of an aggregate unit is small relative to the offense rate, crime rates must be computed from a small number of offenses. Such data are ill-suited to least-squares analysis. Poisson-based regression models of ...

This article critically reviews the evidence on sex offender treatment and subsequently provides new estimates on short-term recidivism among sexual offenders released from prison in New Jersey. The sample of male sex offenders is drawn from the Adult Diagnostic Treatment Center (ADTC), New Jersey’s only sex-offender-specific prison, and the general population of nine prisons within the state o...

In an National Football League overtime, a coin is tossed to determine which team will receive the kick off. In the sudden death format starting on offense has a significantly higher chance of winning. This makes coin tossing one of the most climatic moments and immediately confers an advantage to one team. Proposals to improve the ex post fairness by guaranteeing each team one possession reduc...

A sample of 505 Internet sex offenders and 526 contact sex offenders were compared on a range of psychological measures relating to offense-supportive beliefs, empathic concern, interpersonal functioning, and emotional management. Internet offenders could be successfully discriminated from contact offenders on 7 out of 15 measures. Contact offenders were found to have significantly more victim ...