Statistical Evidence for the Similarity of the Human Dentition

Abstract: Recent scrutiny of forensic science has focused on unreliability of expert witness testimony when based on statements of individuality. In bitemark analysis, assumptions regarding uniqueness of the dentition have been based on use of the product rule while ignoring correlation and nonuniformity of dental arrangement. To examine the effect of these factors, two separate sets of scanned dental models (n = 172 and n = 344) were measured and statistically tested to determine match rates. Results were compared to those of a prior study. Seven and 16 matches of the six anterior lower teeth were found in the respective data sets. Correlations and nonuniform distributions of tooth positions were observed. Simulation tests were performed to verify results. Results indicate that given experimental measurement parameters, statements of dental uniqueness with respect to bitemark analysis in an open population are unsupportable and that use of the product rule is inappropriate.     

Recent trends in suicides utilizing helium

Retrospective review of cases of suicide involving helium inhalation was undertaken at Forensic Science South Australia over a 25-year period from 1985 to 2009. No cases of helium-related suicides were identified in the first 15 years of the study, with one case between 2000 and 2004 and eight cases between 2005 and 2009. Australian data were also reviewed from 2001 to 2009 that showed 30 cases between January 2001 and June 2005, compared to 79 cases between July 2005 and December 2009, an increase of 163%. A review of Swedish data between 2001 and 2009 showed no cases between January 2001 and June 2005, compared to seven cases between July 2005 and December 2009. Thus, all three areas showed recent and striking increases in cases of suicide involving helium inhalation. Given the availability of helium and the recent promotion of this method of suicide, it is quite possible that this may represent a newly emerging trend in suicide deaths.     

A Capacity for Central Coordination: The Case of the Department of the Prime Minister and Cabinet

For the Department of the Prime Minister and Cabinet (PM&C) the year 1987 can now be seen as pivotal in marking a clear end to a period of transition in coordinating structures in the Australian Public Service (APS) that had lasted roughly 20 years. The abolition in 1987 of the Public Service Board, formerly a powerful coordinating agency, is the most obvious marker of the change. The PSB's departure left the Secretary of PM&C with a role that is now often described as ‘head of the public service’. More broadly, the 1987 changes to the machinery of government both formalised and enabled a sea‐change in PM&C's role. Before 1987 a large policy initiation and development project would usually have been considered as beyond PM&C's scope. Since then, extensive and direct policy development work by PM&C has become common. The continuing debates have been over whether PM&C actually delivers in these roles (an empirical question) and how far it should play them (a normative issue). In this article we itemise the capacity, both continuing and developing, which PM&C has to support policy development. Traditional coordination mechanisms are an important part of this armoury and PM&C has long experience of most of them. However policy initiation and development calls for other tools which PM&C has had to develop over the past few decades. There is scope for conflict between the coordination and initiation/development roles. Understanding how a central agency like PM&C carries out each of them and balances the two can potentially contribute to debates on organisational design. We also address the normative issue: whether the growth of prime ministerial impact is a result of an increase in public service support or a cause of its increase ( Walter and Strangio 2007 ) and whether it should be restrained. We accept that the new developments give prime ministers the capacity to oversee policy arenas where once they could not, but regard this as a consequence as much of demand from above as of ambition within the department.     

New laws but few cases: understanding the challenges to the investigation and prosecution of human trafficking cases

All fifty states and the federal government have passed laws to combat human trafficking, but we know little about their effectiveness. Using data from investigative case records and court files for 140 human trafficking cases in 12 U.S. counties and qualitative interviews with law enforcement, prosecutors, and victim service providers, we examined the characteristics of and challenges to investigation and prosecution of human trafficking cases under new state and federal laws. We found that few human trafficking cases are identified by local law enforcement, most cases forwarded to state prosecution are sex trafficking cases involving U.S. citizens, and state prosecutors overwhelmingly charge human trafficking offenders with other, lesser crimes. The legal, institutional, and attitudinal challenges that constrain prosecution of human trafficking are similar across study sites despite varying types of state antitrafficking legislation. Study results suggest prosecution of human trafficking cases is challenging. If new laws are to be effective, then local law enforcement and prosecutors should work collaboratively and adopt proactive human trafficking investigative strategies to identify both labor and sex trafficking cases. There is social benefit to holding traffickers accountable, but more emphasis should be placed on policies that identify and serve victims.     

Keeping Up with the Souzas: Social Influence and Electoral Change in a Weak Party System,Brazil 2002–2006

Despite weak partisanship and considerable political change in the wake of the 2002 election, three‐quarters of Brazilian voters supported a presidential candidate in 2006 from the same party they had backed in 2002. This article assesses the factors causing both electoral stability and electoral change with a transition model, a model testing whether the effects of respondents' evaluative criteria depend on their initial vote choices. Social context—personal discussion networks, neighborhood influences, and the interactions of social networks and municipal context—is the major force promoting stability and change, while the impact of partisanship is limited to a small share of voters.     

Legal liability and research ethics boards: the case of neuroimaging and incidental findings

Neuroimaging research covers a wide range of intriguing issues from revealing brain structures to investigating what happens in our brain when we lie. The field appears to be thriving, but skepticism and alertness to the various ethical, scientific, policy and philosophical challenges associated with it also appear to be on the rise. One particularly complex issue concerns what to do with incidental findings that emerge during the course of neuroimaging research. Research ethics boards (REBs) play a central role in research oversight. In this paper, we will consider some of the potential issues associated with REB liability in negligence in the context of incidental findings in neuroimaging research.     

Juvenile participation in conversations with probation officers

Juvenile probation work comprises a mixture of repressive and empowering strategies, since probation officers need to control young offenders' conduct and at the same time help the offender to take responsibility and live life within the margins of society. This ambiguous nature of juvenile probation work may confuse the communication between probation officers and juveniles. Interviews with offenders of Moroccan origin and their probation officers in the Netherlands show that both parties are unhappy with the mutual communication. According to the youngsters, a restrictive policy is inevitable but might be more effective if this would go together with an empowering approach. Interactional analysis of the conversations shows that the lack of juvenile participation is caused by professional conversational dominance, as seen in topic control, poor role clarification, and a cross-examining style of the conversations.