Another look at across-crime similarity coefficients for use in behavioural linkage analysis: an attempt to replicate Woodhams,Grant, and Price (2007)

Abstract

In the absence of physical evidence, investigators must often rely on offence behaviours when determining whether several crimes are linked to a common offender. A variety of factors can potentially influence the degree to which accurate linking is possible, including the similarity coefficient used to assess across-crime similarity. The current study examines the performance of two similarity coefficients that have recently been compared to one another, Jaccard's coefficient (J) and the taxonomic similarity index (Δ_s), using samples of two crime types, serial homicide (N=237) and serial burglary (N=210). In contrast to previous research, the results indicate that Δ_s does not significantly outperform J with respect to linking accuracy. In addition, both coefficients lead to higher levels of linking accuracy in cases of serial homicide compared to serial burglary. Potential explanations for these findings are presented and their implications are discussed.     

How should we understand the effect of age on sexual recidivism?

Abstract

Research into the effect of age on sexual recidivism risk is a relatively new and developing area of interest and is likely to be of great interest for forensic practitioners responsible for the community supervision of sexual offenders. Meta-analytical and follow-up reconviction studies indicate an inverse relationship between age and sexual recidivism risk, where younger sex offenders pose a greater risk of reconviction than older sex offenders. This finding has led to the development of actuarial risk scales which identify younger sex offenders (<25 years) as posing the greatest risk. However, recent research studies have reported contradictory results to this assumption and found a non-linear relationship between age and sexual recidivism risk. Only a small number of studies have investigated the effect of age on sexual recidivism by comparing age bands and rates of sexual recidivism. Researchers have also considered the effect of age on actuarial risk, which risk factors are associated with which age bands and sexual recidivism rates between sex offender subgroups. The purpose of this paper is to integrate this research and to link commonalities between these studies. This paper organizes the effect of age on sexual recidivism into five categories: (i) the effect of age and actuarial risk; (ii) the effect of age on sexual arousal; (iii) the effect of age-at-release on sexual recidivism risk; (iv) the effect of age-at-first-offence on sexual recidivism risk; and (v) the effect of age on child molesters and rapists on sexual recidivism risk. Important differences were found between age bands of sexual offenders in terms of sexual recidivism risk and actuarial risk factors as well as differences between rapists and child molesters. The relative importance of factoring age when assessing risk in sex offenders is discussed.     

Assessing the impact of stricter alcohol advertising standards: the case of Beam Global Spirits

Reducing youth exposure to alcohol advertising is a global health priority. In most countries around the world, the alcohol industry is given the opportunity to regulate itself with respect to advertising practices. Generally, the alcohol industry self‐regulations are lax, allowing youth to be disproportionately exposed to alcohol advertising. However, Beam Global Spirits and Wine (Beam) voluntarily adopted more restrictive advertising standards in the United States in 2007. This study assessed Beam's compliance with their new standard and estimates its effect on youth exposure and advertising costs. We found that Beam's compliance with its more restrictive standards was imperfect, but never‐the‐less, we estimated that youth exposure to alcohol advertising was reduced compared to other spirits brands. Beam's more restrictive standards did not increase their advertising costs, and therefore other alcohol companies should consider adopting similar standards around the world. Copyright © 2015 John Wiley & Sons, Ltd.     

Rediscovering the Relative Deprivation and Crime Debate: Tracking its Fortunes from Left Realism to the Precariat

Critical Criminology - This article revisits the concept of relative deprivation and asks whether it is still useful for criminology. The article traces the way relative deprivation has been used...     

Examining the relationship between school suspensions/expulsions and felonies

This paper examines the suspensions and expulsions of students. Using individual student pupil (rather than incident) data, this research examines whether these rates are driven by a few high-volume offenders and whether high-volume offenders become felons. This study uses the number of students at three levels of violations: 0 offenses, 1–3 offenses, and four or more offenses. The authors also examined the relationship between the three groups of violators and committing a felony as a juvenile. The number of offenses per student ranged from 0 to 31. Findings indicated that those with 0 school infractions had no felonies, while the other two groups of violators 1–3 and four or more had a similar numbers of felonies. Implications for developmental models of delinquency are discussed.     

Lessons from Resource Dependence Theory for Contemporary Public and Nonprofit Management

The fiscal landscape continues to challenge public and nonprofit managers. Against this backdrop, public and nonprofit managers look for new strategies to address the challenges associated with limited resources. Resource dependence theory provides valuable guidance for managers who want to understand the considerations and consequences relevant to different types of interorganizational partnering. In this article, the theory's core ideas are described, along with three common strategies or tactics that organizations use to obtain critical resources from the environment: merging, forming alliances, and co‐opting. For each strategy, the authors derive a set of practical lessons for busy public and nonprofit managers.     

Mapping the Racial Bias of the White Male Capital Juror: Jury Composition and the “Empathic Divide”

This article examines the nature of racial bias in the death sentencing process. After reviewing the various general explanations for the continued significance of race in capital cases, we report the results of an empirical study in which some aspects of racially biased death sentencing are examined in depth. Specifically, in a simulated capital penalty‐phase trial setting where participants were assigned to small group “juries” and given an opportunity to deliberate, white male jurors were significantly more likely to sentence black defendants to death than were women and nonwhite jurors. This racialized pattern was explained in part by the differential evaluation of the case facts and the perceptions of the defendant that were made by the white male jurors. We discuss these findings in light of social psychological theories of contemporary racism, and we conclude that the demonstrated bias in capital jury settings should be understood as an interaction of several factors, including individual juror characteristics, group‐level demographic composition, and group deliberation processes.