A dedicated automated system for extraction, quantification and STR amplification of forensic evidence samples

Forensic DNA analysis is a multi-step process involving extraction of DNA, quantification of human DNA in the extract, amplification using multiplex STR systems, separation of products, and data analysis. The backlog of forensic casework is increasing worldwide. Automation is one significant way to alleviate the bottleneck of sample processing in forensic labs. The HID EVOlution™ Combination System described here is a robust, reliable sample processing platform, easily adapted to forensic laboratory workflows. Using a variety of forensic sample types including: blood stained FTA paper, cotton fabric and denim, dried blood spiked with known PCR inhibitors, saliva on cotton swabs, and semen stains, we found that yields of human DNA and STR profiles obtained with AmpFlSTR^® Idenitfiler^® kits were complete, highly reproducible, and equivalent to results obtained using the manual PrepFiler™ reagent extraction method. Automated operation was clean, and no cross-contamination was detected between extraction blanks and interspersed high DNA content samples.     

A Perspective on Errors,Bias, and Interpretation in the Forensic Sciences and Direction for Continuing Advancement*

Abstract: The forensic sciences are under review more so than ever before. Such review is necessary and healthy and should be a continuous process. It identifies areas for improvement in quality practices and services. The issues surrounding error, i.e., measurement error, human error, contextual bias, and confirmatory bias, and interpretation are discussed. Infrastructure is already in place to support reliability. However, more definition and clarity of terms and interpretation would facilitate communication and understanding. Material improvement across the disciplines should be sought through national programs in education and training, focused on science, the scientific method, statistics, and ethics. To provide direction for advancing the forensic sciences a list of recommendations ranging from further documentation to new research and validation to education and to accreditation is provided for consideration. The list is a starting point for discussion that could foster further thought and input in developing an overarching strategic plan for enhancing the forensic sciences.     

The Sanctions-Perceptions Link in a Model of School-based Deterrence

This paper reports a study examining associations between objective indicators of the level of discipline within schools and students’ perceptions of the strictness of discipline. Data were analyzed from the National Education Longitudinal Survey (NELS), a nationally representative panel study of eighth grade students attending public and private schools in 1988. We find evidence for an association between objective and perceived risk of discipline in models that examine the covariation of these two constructs at several cross sections, and in models of change in perceptions as a function of change in school sanctioning climate. Moreover, these associations were strongest in small and less disordered schools.

Criminal Deterrence: Evidence from an Individual-Level Analysis of 24/7 Sobriety

Decisionmakers continue to search for new ways to deter criminal behavior that do not rely on increasing the severity of punishment. This paper evaluates South Dakota's 24/7 Sobriety Program—a novel, large-scale intervention requiring those arrested for or convicted of an alcohol-related offense to abstain from alcohol and submit to alcohol tests multiple times daily. Those testing positive or missing a test receive a swift,certain, and moderate sanction; typically, a night or two in jail. To estimate the causal effect of the 24/7 program on the probability of rearrest or probation revocation for those arrested for a second or third driving under the influence (DUI) offense, we instrument an individual's 24/7 participation with program availability in the county of arrest. We estimate that the individual-level probability of rearrest or probation revocation is 13.7 percentage points (49 percent; p = 0.002) lower for 24/7 participants than non-participants 12 months after their DUI arrest. We detect substantive decreases at 24 and 36 months, but the precision of those estimates depends on model specification. These findings provide empricial support for applying “swift-certain-fair” sanctions to deter noncompliance in community supervision settings. This paper also provides policymakers with evidence for a new approach to reduce criminal activity among those whose alcohol use leads them to repeatedly threaten public health and safety.     

Is the Torrens System German?

Recently support has grown for the view that the Torrens system of lands titles registration, which has now spread to numerous jurisdictions throughout the world, was actually not Torrens's work at all, but a copy of a German system passed off by him as his own production. This article reviews the evidence, much of which is here discussed for the first time, and concludes that that view is incorrect. Torrens is entitled to the credit for conceiving the principles of the system; for drafting the bill to give effect to them (with the help of a circle of critical reviewers); and for convincing the public and politicians to support it.     

Discolouring Democracy? Policing,Sensitive Evidence,and Contentious Deaths in the United Kingdom

This article examines recent United Kingdom government proposals for secret inquests, which, it is argued, are part of a general push for secrecy discernible across common law jurisdictions, and which include developments such as increased recourse to sensitive evidence in forensic settings and the normalization of intelligence‐led policing. While the push for secrecy is justified by national security claims, the article shows that in cases of contentious death involving police, the issue is less about national security and more about the use of intercept evidence, covert surveillance, and intelligence‐led policing, all of which have implications for police trust, accountability, and reputation management.     

One-Stop Shopping for Government Services: Strengths and Weaknesses of the Service Tasmania Experience

Government service delivery in Tasmania has undergone a customer-orientated shift, changing the nature of the relationship between the Government and the community. A Tasmanian State Government initiative named Service Tasmania utilizing information technologies and private sector style business administration values offers new possibilities in service delivery through its integrated whole-of-government approach. This initiative facilitates cross-agency customer-centered service delivery within the overall government framework. This article introduces an empirically based qualitative investigation into the implementation of Service Tasmania’s One-Stop-Shops. Particular interest is placed on identifying the strengths and weaknesses of implementing the Service Tasmania service delivery model. Data were analyzed by using a grounded theory approach comprising open, axial, and selective coding. Findings indicate that whilst some weaknesses in the approach have been uncovered the numerous strengths outweigh them. Some practical implications are identified for policy-makers and practitioners engaged in service delivery reform projects.