A Classification Tree Approach to the Development of Actuarial Violence Risk Assessment Tools

Since the 1970s, a wide body of research has suggested that the accuracy of clinical risk assessments of violence might be increased if clinicians used actuarial tools. Despite considerable progress in recent years in the development of such tools for violence risk assessment, they remain primarily research instruments, largely ignored in daily clinical practice. We argue that because most existing actuarial tools are based on a main effects regression approach, they do not adequately reflect the contingent nature of the clinical assessment processes. To enhance the use of actuarial violence risk assessment tools, we propose a classification tree rather than a main effects regression approach. In addition, we suggest that by employing two decision thresholds for identifying high- and low-risk cases--instead of the standard single threshold--the use of actuarial tools to make dichotomous risk classification decisions may be further enhanced. These claims are supported with empirical data from the MacArthur Violence Risk Assessment Study.     

Mental Disorder, Violence, and Gender

Recent studies have reported comparable rates of violence among men and women with mental disorder, raising important issues for clinical risk assessment. This study examines the relationship between gender and violence using data from the MacArthur Violence Risk Assessment Study. Patients in acute psychiatric wards were interviewed 5 times over the year following their discharge to the community. Results showed some differences between men and women in the violence committed immediately following discharge, with rates for men being higher. But the prevalence of violence over the 1 year was similar for female and male discharged patients. However, there were substantial gender differences in the situational context of the violence committed. Men were more likely to have been drinking or using street drugs, and less likely to have been adhering to prescribed psychotropic medication, prior to committing violence. The violence committed by men was more likely to result in serious injury than the violence committed by women, and men were more likely than women to be arrested after committing a violent act. Women were more likely to target family members and to be violent in the home.     

Caesareans and Cyborgs

This paper argues that cyborg perspectives offer real possibilities for the debate around enforced caesareans and the search for a language to encompass embodied maternal subjectivity. It is suggested, with reference to the fictional narrative of Star Trek, that cyborg figures have the power to disrupt the liberal subject and the body in legal discourse, not least because the plethora of cyborgs challenges simple conceptions of connections/disconnections between bodies. Feminist readings of case law relating to enforced caesarean sections have raised questions about the notion of autonomy at the heart of liberal legalism, have argued that law is complicit with white male techno-medicine's approach to childbirth and focused upon the pregnant woman's lived experience of pregnancy. The recent Court of Appeal decision in St George's Healthcare N.H.S Trust v. S., Regina v. Collins and Others, ex parte S., where the pregnant woman's self-determination was upheld, provides a good opportunity to confront both the liberal story and the idea of connectedness between mother and unborn child. This revised version was published online in August 2006 with corrections to the Cover Date.     

Researching and Theorizing the Processes of Professional Identity Formation

This paper is concerned with professional identity formation, at both the individual and organizational levels, and the dialectic between individual processes and the social trajectory of organizational reproduction. The research project on which the paper is based was stimulated by the growing concern of United Kingdom legal education institutions and professional bodies with how new entrants to an increasingly diverse profession negotiate the changing demands of a complex stratified and segmented labour market. The paper will give a brief outline of the first stage of a longitudinal study of two cohorts of part-time and full-time students on the Legal Practice Course at a new university in England, (some of whom are now in training with firms) and representatives of the local legal employment market. A report of the research results to date will be set in the context of an exploration of some key theoretical perspectives which inform the field of the profession and of identity development, such as theories of symbolic, linguistic, and cultural capital.