Social networks of sexual offenders

Abstract

Despite the extensive research attention directed toward criminal peer groups, there has been little attention to the peer groups of sexual offenders. Sexual offenders are often considered to be loners who offend in isolation, but cases of sex crimes involving peer support are not difficult to find, e.g., child sex rings, gang rapes. To examine the role of peers in sexual offending, sexual offenders and nonsexual offenders were asked whether they knew other people who have committed sexual crimes. In comparison to the nonoffender community comparison group, the sexual offenders reported considerably more association and identification with sexual offenders. The associations also tended to be offence specific, such that child molesters knew other child molesters and rapists knew other rapists. These findings have important implications for the assessment and treatment of sexual offenders.     

A modified Stroop task with sexual offenders: Replication of a study

Abstract

Cognitive–behavioural treatment of sexual offenders assumes that sexual offenders are motivated by deviant attitudes, perceptions and values. Although aspects of deviant schema can be assessed by questionnaires, self-report measures are limited by the respondent's willingness to be forthright and by the fact that, typically, these cognitive processes occur quickly, revealing signs of automaticity. Recent research by Smith and Waterman has suggested that the deviant schema of sexual offenders could be assessed using a version of the Stroop colour-naming task. Long latency periods to sexual colour words imply a longer information-processing route and evidence of pre-established (deviant) sexual cognitive schema. Stroop techniques may offer the advantage of eliminating limitations that arise when using self-report techniques, such as fakeability and social desirability concerns. The current study replicates and extends Smith and Waterman's results using samples of sexual offenders, non-sexual violent offenders and non-violent offenders. The cumulative results of the two studies suggests that Stroop techniques have promise, but that further work is required before measures are available that have sufficient reliability and validity to be used in applied contexts.     

Wrestling Sprawl to the Ground: Defining and measuring an elusive concept

Abstract

The literature on urban sprawl confuses causes, consequences, and conditions. This article presents a conceptual definition of sprawl based on eight distinct dimensions of land use patterns: density, continuity, concentration, clustering, centrality, nuclearity mixed uses, and proximity. Sprawl is defined as a condition of land use that is represented by low values on one or more of these dimensions.

Each dimension is operationally defined and tested in 13 urbanized areas. Results for six dimensions are reported for each area, and an initial comparison of the extent of sprawl in the 13 areas is provided. The test confirms the utility of the approach and suggests that a clearer conceptual and operational definition can facilitate research on the causes and consequences of sprawl.     

Predicting Recidivism Amongst Sexual Offenders: A Multi-site Study of Static-2002

The predictive accuracy of Static-2002 (Hanson & Thornton, Notes on the development of Static-2002 (Corrections Research User Report No. 2003-01), 2003) was examined in eight samples of sexual offenders (five Canadian, one U.S., one U.K., one Danish; total sample of 3,034). Static-2002 showed moderate ability to rank order the risk for sexual, violent and general (any) recidivism (AUCs of .68, .71, and .70, respectively), and was more accurate than Static-99. These findings support the use of Static-2002 in applied assessments. There were substantial differences across samples, however, in the observed sexual recidivism rates. These differences present new challenges to evaluators wishing to use actuarial risk scores to estimate absolute recidivism rates.     

Individual Confidence Intervals Do Not Inform Decision-Makers About the Accuracy of Risk Assessment Evaluations

Some recent articles have proposed that the confidence interval for the predicted outcome of a single case can be used to describe the predictive accuracy of risk assessments (Hart et al. Br J Psychiat 190:60–65, 2007b; Cooke and Michie, Law Hum Behav 2009). Given that the confidence intervals for an individual prediction are very large, Cooke and colleagues have questioned the wisdom of applying recidivism rates estimated from group data to single cases. In this article, we argue that the confidence intervals for the recidivism outcome predicted for a single case will range between zero to one (i.e., be uninformative) when the outcome is dichotomous and the predicted probability is between .05 and .95. This is true by definition and limits the utility of using individual confidence intervals to measure predictive accuracy. Consequently, other quality indicators (many of which are non-quantitative) are needed to determine the accuracy and error of risk evaluations.     

Using court culture to strengthen the administration of trial courts

Managerial culture defines the character of administrative practices in trial courts, shaping the way cases are handled, participants in the legal process are treated, and how a court functions as an institution. In fact, the notion of local legal culture is part of the conventional wisdom. What is missing in such discussions are the benefits of a comprehensive methodological approach to translate rich ideas and hunches into the measurement of court culture. In response, researchers at the National Center for State Courts have developed an analytical framework including a conceptual typology of culture, an instrument for measuring managerial culture and a schema for interpreting results within and between courts. The essay concludes with an invitation for the People＇s Republic of China to adapt the framework to understand the nature of culture in their courts of first instance.     

Taking behavioralism seriously: some evidence of market manipulation

Over the last ten to fifteen years, economists and legal scholars have become increasingly interested in and sensitive to behavioralist insights. In a companion article, Jon Hanson and Douglas Kysar argued that those scholars have nevertheless given short shrift to what is, at least for policymaking purposes, perhaps the most important lesson of the behavioralist research: individuals' perceptions and preferences are highly manipulable. According to Hanson and Kysar, one theoretical implication of that insight for products liability law is that manufacturers and marketers will manipulate the risk perceptions of consumers. Indeed, to survive in a competitive market, manufacturers and marketers must do so. In this Article, Hanson and Kysar present empirical evidence of market manipulation--a previously unrecognized source of market failure. The Article begins by surveying the extensive qualitative and quantitative marketing research and consumer behavioral studies that discern and influence consumer perceptions. It then provides evidence of market manipulation by reviewing common practices in everyday market settings, such as gas stations and supermarkets, and by examining familiar marketing approaches, such as environmentally oriented and fear-based advertising. Although consumers may be well-aware of those practices and approaches, they appear to be generally unaware of the extent to which those tactics are manipulative. The Article then focuses on the industry that has most depended upon market manipulation: the cigarette industry. Through decades of sophisticated marketing and public relations efforts, cigarette manufacturers have heightened consumer demand and lowered consumer risk perceptions. Because consumers are aware that smoking may pose significant health risks, the tobacco industry's success in manipulating risk perceptions constitutes especially strong evidence of the power of market manipulation. The Article concludes by arguing that the evidence of market manipulation may justify moving to a regime of enterprise liability. Indeed, according to Hanson and Kysar, the evidence of market manipulation confirms the intuitions of the first generation of product liability scholars, who worried about manufacturers' power to manipulate and called for just such a regime.     

Twenty years of progress in violence risk assessment

Violence risk assessment has advanced considerably in the last 20 years. In the 1980s, leading professionals questioned the very possibility of valid violence risk assessments; now, many of the major risk factors have been identified, and professional debate focuses on how best to combine these risk factors into meaningful evaluations. An important contributor to this advance in knowledge has been the rise of meta-analytic reviews. Through quantitative summaries, the cumulative findings of small, potentially insignificant studies have provided important answers to questions concerning the effective assessment and treatment of violent offenders.