Child–Parent Violence: An Empirical Analysis of Offender, Victim, and Event Characteristics in a National Sample of Reported Incidents

Child–parent violence (CPV) is arguably the most under-researched form of family violence, despite an extremely high rate of occurrence and increasing prevalence. Prior research has been plagued by shortcomings including, but not limited to, a reliance on small clinical samples, age parameter restrictions, antiquated data, undefined parental relationships, and conflicting findings across studies. The current research examined a large cross-national sample of reported offenders (n = 17,957), collected as part of the 2002 National Incident Based Reporting System (NIBRS). Extrapolated from past literature, victim and offender demographics and incident characteristics are analyzed using chi-square tests and logistic regression to establish baseline findings from a more comprehensive sample of data than previously existed. Aggregate results suggest, in part, that white biological mothers older than 40 years of age are most likely to be victimized by their male children 14–17 years of age. Further, a majority of assaults involve personal weapons and tend to result in minor injury or no injury with very few offenders under the influence of alcohol or drugs. This work both corroborates and contrasts past finding of CPV research providing new insights into this complex crime and the baseline data needed to inform theory and test hypotheses.

Autosomal microsatellite allele frequencies for 15 regionally defined Aboriginal Australian population datasets

DNA profiling results presented in court must be accompanied by a statistical estimate of its evidential weight. In calculating such statistics, allele frequencies from the tested loci are required. These allele frequencies should be collected at a level that appropriately represents the genetic diversity that exists in the population. This paper reports allele frequencies and the results of population genetic testing of autosomal microsatellite profiles from indigenous Australian donors. In contrast to previous practice these data have been collated according to traditional regional boundaries rather than recently imposed State and Territory borders.     

Physical components of soft-tissue ballistic wounding and their involvement in the generation of blood backspatter*

Gunshot backspatter comprises biological material expelled backward through bullet entry holes. Crime scene investigators analyze backspatter patterns to infer wounding circumstances. An understanding of the mechanism of backspatter generation, and the relationship between spatter patterns and bullet and tissue characteristics, would enhance the predictive value of such analysis. We examined soft-tissue ballistic wounding responses to determine the underlying components and how these might be relevant to the generation of backspatter. We identified five mechanistic components to ballistic wounding (elastic, viscous, crushing, cutting, and thermal), each related to mechanical disciplines (respectively, solid mechanics, fluid mechanics, fracture mechanics, rheology, and thermodynamics). We identified potential roles for these five components in backspatter formation and provide a scenario whereby a sequence of events incorporating these components could lead to backspatter generation and expulsion. This research provides a framework for the mathematical representation, and subsequent computational predictive modeling, of backspatter generation and pattern formation.     

Bioterrorism: processing contaminated evidence, the effects of formaldehyde gas on the recovery of latent fingermarks

In the present age of heightened emphasis on counter terrorism, law enforcement and forensic science are constantly evolving and adapting to the motivations and capabilities of terrorist groups and individuals. The use of biological agents on a population, such as anthrax spores, presents unique challenges to the forensic investigator, and the processing of contaminated evidence. In this research, a number of porous and nonporous items were contaminated with viable anthrax spores and marked with latent fingermarks. The test samples were then subjected to a standard formulation of formaldehyde gas. Latent fingermarks were then recovered post decontamination using a range of methods. Standard fumigation, while effective at destroying viable spores, contributed to the degradation of amino acids leading to loss of ridge detail. A new protocol for formaldehyde gas decontamination was developed which allows for the destruction of viable spores and the successful recovery of latent marks, all within a rapid response time of less than 1 h.     

Preventing youth suicide: issues for law enforcement personnel

Suicide is a leading cause of death for adolescents. A number of problem behaviors associated with youth suicide fall into the purview of law enforcement personnel, and they are therefore in a position to detect risk and prevent suicidal behaviors. Eight hundred one youth identified as having school difficulty, a group at increased risk for both suicide and legal problems, participated in a paper and pencil survey followed by an interview focusing on suicide risk and protective factors. Linear regression was used to examine the ability of factors within each risk and protective factor dimension to predict current suicide risk. The study goal was to determine the most relevant factors influencing suicide risk in each domain examined. Findings are discussed in terms of implications for assessment and policy for law enforcement personnel.     

Polygraph testing for deception in Australia: effective aid to crime investigation and adjudication?

Polygraph testing--or the monitoring and analysing of selected physiological measures of an individual who is being interviewed, for the purpose of detecting deception--is controversial in Australia. Considerable mythology surrounds this method of detecting deception. Embedded in popular perceptions of crime fighting and utilised in high-profile criminal cases in Western Australia, Victoria and Queensland, polygraph testing is also explicitly prohibited from being used in crime investigation in New South Wales. Unlike in the United States, polygraph testing has not hitherto routinely been used by government departments and authorities as a preemployment screening tool, but is increasingly being offered in the private sector in Australia. This article examines the current scope of polygraph testing in Australia, describes different approaches to testing, briefly reviews recent information relating to validity and evaluates State legislation prohibiting the use of polygraph testing for specified purposes in New South Wales. Consequent to the continuing controversy regarding the accuracy of polygraph testing in detecting deception (and, conversely, truth-telling), it is argued that the emerging use of polygraph testing is problematic and common law principles rendering the results of such testing inadmissible in court do not constitute sufficient safeguard against inappropriate and intrusive testing. Future research should identify specific polygraph testing techniques and consider the most socially beneficial way of regulating this emerging area of practice.     

Tabet v Gett: the end of loss of chance actions in Australia?

This article critically analyses the recent High Court decision in Tabet v Gett (2010) 84 ALJR 292; [2010] HCA 12 which considered whether a person should be able to obtain compensation on the basis of a loss of a chance of a better medical outcome. The appellant argued that the High Court should regard a plaintiff as entitled to compensation when a breach by a defendant of their duty of care causes the plaintiff to lose a possibility, but not a probability, of a better medical outcome. The High Court held that it was not possible for a person in the position of the appellant to obtain compensation for the loss of a chance of a better medical outcome.     

Modeling Forensic DNA Database Performance*

Abstract: Over the past decade or more, DNA databases have been a focal point of development for the forensic field. Using this approach, forensic and law enforcement agencies have aided millions of investigations, many of which would remain unsolved but for the intelligence links provided from DNA database comparison. However, despite their widespread use and increasingly broad legislative and operational reach, there has been limited overarching performance modeling or reflection on drivers of operational or financial efficiency. This study derives an inferential model for DNA database performance using data from major national DNA database programs. Parameters that optimize desirable database outputs (matches) are isolated and discussed, as is an approach for maximizing financial efficiency and minimizing ethical impact. This research takes important steps toward identifying measures of performance for forensic DNA database operations.