Distinguishing between stamping in blood from walking through blood using blood pattern analysis.

Bloodstains are typically encountered in violent incidents involving the use of a weapon or physical actions, such as punching, kicking, or stamping. Bloodstain pattern analysis can provide inceptive evidence or intelligence about what happened in an alleged incident, the sequence of events, along with indicating possible suspects if blood is analysed through DNA profiling. This research project focused on the differences in patterns created on footwear during a violent action, such as stamping on a person, and a non-violent action, such as walking through a pool of blood. In this project, several experiments were designed to simulate the stamping and walking actions on a surface wet with blood: carpet, lino flooring, and belly pork meat. Two volunteers with varying body weights were recruited to perform the two actions, using a pair of trainers and a pair of Wellington boots. Defibrinated horse blood was used to simulate real human blood. It was found that the patterns created from stamping and walking through blood differed by the type of pattern and the number and size of stains. The footwear used in the stamping action was characterised by a larger contact stain on the sole than those used in the walking actions: ∼209 mm in length by ∼92 mm in width versus ∼65 mm in length by ∼60 mm in width. The stamping action produced a large number of impact spatters (∼435) on the sides of the footwear versus no impact spatters in the walking actions. The presence of impact spatters was found to be the most prominent feature that differentiated between the two actions. The findings were statistically significant (p < 0.05) and could assist in evaluating whether a defendant was actively involved in a stamping action, or the evidence found was due to innocent reasons.

Developing a virtual laboratory module for forensic science degree programmes.

Laboratory work is essential in forensic science degree courses. They provide students with an opportunity to put theory into practice, as well as develop relevant professional laboratory skills through a case-based learning framework. Traditional laboratory instruction involves the use of a written laboratory script or manual that details the laboratory procedures and techniques for an experiment. Occasionally, instructors may provide a brief in-person demonstration of a critical aspect of the experimental procedure during the session. Since the coronavirus pandemic, the use of virtual laboratory (vLab) resources, such as video demonstrations, in teaching science practical skills has increased. These resources may be used alone or in combination with in-person laboratory sessions in a flipped learning model. Previous research has shown that vLab resources could enhance students' knowledge, confidence, and experience inside the laboratory. This study aimed to explore the perceptions and attitudes of forensic science students toward the use of a vLab module. Three videos were created in which procedures for carrying out presumptive tests, screening exhibits, and recording examinations were demonstrated. Seven undergraduate students enrolled at different stages of a forensic science degree programme were introduced to the vLab module and interviewed using a semi-structured interview approach. Through a thematic synthesis of the interview transcripts, we found that the implementation of an inclusive vLab module could enhance students' knowledge, confidence, and independence in carrying out forensic science laboratory procedures.

Integrity, Trustworthiness, and Effectiveness: Towards an Ethos for Forensic Genetics.

Forensic genetics comes under critical scrutiny when developments challenge previously accepted legal, ethical, social, and other boundaries. Forensic geneticists continue to build a knowledge culture within a community of practice that acknowledges ethical standards of conduct in both research and the societal application of forensic genetics. As the community further cements and extends its societal role, and in that process often pushing at ethical and legal boundaries, it requires a strong, resilient, and responsive ethos that, in setting clear parameters for conduct, fosters the field's sense of purpose. While supra-national declarations and human rights protections, coupled with local regulations, provide some parameters for practice, and discipline-specific guidance has refined an agenda for forensic genetics research and application, this maturing field needs to now define its core principles. This contribution proposes the values of integrity, trustworthiness, and effectiveness as a foundational triptych for a bespoke forensic genetics ethos to ensure the augmentation of developments that range from a purely science-oriented to a wider societally relevant knowledge culture.

Trends in forensic DNA database: transnational exchange of DNA data.

The transnational exchange of forensic DNA data has become a modern trend in fighting cross-border crime, terrorism and illegal immigration. Forensic DNA data allow the police to identify, eliminate or link individuals associated with a crime. Additionally, different crime scenes can be linked via the DNA profile to identify serial offenders or determine crime patterns. Approaches to the transnational exchange of DNA data can be categorized into four: (1) creation of an international DNA database, (2) linked or networked national DNA databases, (3) request-based exchange of data, and (4) a combination of these. Most countries operate the combination system of data exchange. This paper briefly introduces the different approaches in the transnational sharing of forensic DNA data, the legislative and operational framework, pattern of data exchange and participating states, and policy challenges associated with data sharing. Generally, most DNA exchange systems are modelled as the European Union Prüm regime. This operates under two stages: hit/no-hit query and further information sharing. The scope of the data exchange is governed by individual national legislation that determines the type of information that can be shared and the national authority responsible for the system. Though DNA data exchange has been instrumental in resolving serious crimes such as gang and serial rape, and armed robbery, adequate information about their overall effectiveness and efficiency is lacking. Further, operational, legal and ethical challenges including issues of privacy and proportionality appear to limit the full potential of the DNA data exchange system.

Gaughran vs the UK and public acceptability of forensic biometrics retention.

This commentary provides a response to the European Court of Human Rights ruling in the case of Gaughran vs the United Kingdom on 13 February 2020. The Court ruled that the indefinite retention of DNA, fingerprints and facial images from all convicted adults was disproportionate. Using data from a survey on public attitudes, we examine the public acceptability of the police retention of forensic biometrics from the population.

Towards a reformed policy for immigrant DNA tests, a commentary.

DNA can be useful corroborative evidence in establishing familial relationship in immigration cases. Presently, there is no specific law in the UK regulating the use of DNA in this domain. This has led to inconsistencies in policy guidance and the rejection of some immigrant applications solely or partly due to a lack of DNA evidence. This commentary draws on the DNA regulatory regime in law enforcement to make a case for a specific DNA immigration law to protect individual rights, assure fairness and trust in the treatment of applicants. In addition to a specific law, consistency in operations should be ensured by developing a central point of contact for guidance including a central IT system, and a custodian of the DNA application process. Further, a single code of practice and conduct is proposed to ensure that guidance products are in line with the law and practice. An independent multi-stakeholder board is also recommended to ensure that policies are representative of the views of applicants and their relatives; policy officers and operational staff; and policymakers and the public.

The effectiveness of the UK national DNA database.

Since the emergence of forensic DNA profiling and the corollary creation of DNA databases, efforts to maximise the efficiency and utility of DNA technology have intensified. Such efforts are expedient given the imperative that expenditure on DNA should be cost-effective and the benefits demonstrable. The practice of retaining DNA profiles in databases, either obtained from individuals involved in criminal investigations, or retrieved from suspected crime scenes, has spread globally. The UK's National DNA Database (NDNAD), created in 1995, is both one of the longest established, and biggest of such forensic DNA databases internationally. As such, it is instructive to look at whether there is evidence to demonstrate the effectiveness of this DNA database. This paper thus examines efforts to gauge the effectiveness of forensic DNA databases, concluding that while the UK NDNAD may have led directly to convictions in high profile crimes, its broader impact upon public security goals remains elusive.

Forensic science in Ghana: A review.

The use of forensic science continues to grow across the world. In Ghana, major advancements took off in 2011, including the introduction of modern DNA profiling and the establishment of an automated fingerprint identification system. These developments have led to some positive impacts on the delivery of justice, including the exoneration of a wrongly incarcerated individual. However, a review of the policy-related aspects of forensic science shows gaps in legislation, governance, service provision, quality assurance and accreditation, education and research. An important recommendation to improve forensic science in Ghana is the creation of a "national policy strategy", a blueprint informed by relevant stakeholders, best practice from other countries and the status of the field. Resolutions to the policy issues identified in this review will ensure a more robust application of forensic science in delivering safe justice and enhancing public security.

Forensic DNA retention: Public perspective studies in the United Kingdom and around the world.

This review analysed public perspective studies on forensic DNA retention in the United Kingdom and around the world. The studies generally show strong public support for the long-term or indefinite retention of DNA from convicts and suspects. There is considerable support for the retention of DNA from all or some arrestees and potentially the entire population. This was predicated upon the belief that forensic DNA databases have crime-solving abilities, which the public rate highly. In the UK, it was found that the current Protection of Freedoms Act 2012 regime is broadly representative of the recommendations of the surveyed British public. Nevertheless, the studies highlighted a gap in forensic DNA education among the public, suggesting that public views may not be well informed. Overall, there was clear evidence of privacy concerns and the potential misuse of DNA records among the public, with a significant number opposing the retention of DNA from the innocent. It was found that most of the studies were qualitative or non-representative of the relevant population, limiting the generalisation of the results. There was also limited studies among a representative sample of primary stakeholders who are well-informed or directly exposed to the benefits, challenges and risks associated with DNA retention. A research into stakeholders rating of different forensic DNA retention regimes is therefore highly recommended. This is important because the studies suggest divergent views among criminal justice professionals and other members of the public, with the former expressing expansive views and the latter expressing restrictive views. The primary stakeholder's survey will help establish whether the relevant safeguards have been put in place to protect both public security and individual interests.

The UK National DNA Database: Implementation of the Protection of Freedoms Act 2012.

In 2008, the European Court of Human Rights, in S and Marper v the United Kingdom, ruled that a retention regime that permits the indefinite retention of DNA records of both convicted and non-convicted ("innocent") individuals is disproportionate. The court noted that there was inadequate evidence to justify the retention of DNA records of the innocent. Since the Marper ruling, the laws governing the taking, use, and retention of forensic DNA in England and Wales have changed with the enactment of the Protection of Freedoms Act 2012 (PoFA). This Act, put briefly, permits the indefinite retention of DNA profiles of most convicted individuals and temporal retention for some first-time convicted minors and innocent individuals on the National DNA Database (NDNAD). The PoFA regime was implemented in October 2013. This paper examines ten post-implementation reports of the NDNAD Strategy Board (3), the NDNAD Ethics Group (3) and the Office of the Biometrics Commissioner (OBC) (4). Overall, the reports highlight a considerable improvement in the performance of the database, with a current match rate of 63.3%. Further, the new regime has strengthened the genetic privacy protection of UK citizens. The OBC reports detail implementation challenges ranging from technical, legal and procedural issues to sufficient understanding of the requirements of PoFA by police forces. Risks highlighted in these reports include the deletion of some "retainable" profiles, which could potentially lead to future crimes going undetected. A further risk is the illegal retention of some profiles from innocent individuals, which may lead to privacy issues and legal challenges. In conclusion, the PoFA regime appears to be working well, however, critical research is still needed to evaluate its overall efficacy compared to other retention regimes.

Evaluation of Changes in Ghanaian Students' Attitudes Towards Science Following Neuroscience Outreach Activities: A Means to Identify Effective Ways to Inspire Interest in Science Careers.

The scientific capacity in many African countries is low. Ghana, for example, is estimated to have approximately twenty-three researchers per a million inhabitants. In order to improve interest in science among future professionals, appropriate techniques should be developed and employed to identify barriers and correlates of science education among pre-university students. Young students' attitudes towards science may affect their future career choices. However, these attitudes may change with new experiences. It is, therefore, important to evaluate potential changes in students' attitudes towards science after their exposure to experiences such as science outreach activities. Through this, more effective means of inspiring and mentoring young students to choose science subjects can be developed. This approach would be particularly beneficial in countries such as Ghana, where: (i) documented impacts of outreach activities are lacking; and (ii) effective means to develop scientist-school educational partnerships are needed. We have established an outreach scheme, aimed at helping to improve interaction between scientists and pre-university students (and their teachers). Outreach activities are designed and implemented by undergraduate students and graduate teaching assistants, with support from faculty members and technical staff. Through this, we aim to build a team of trainee scientists and graduates who will become ambassadors of science in their future professional endeavors. Here, we describe an approach for assessing changes in junior high school students' attitudes towards science following classroom neuroscience outreach activities. We show that while students tended to agree more with questions concerning their perceptions about science learning after the delivery of outreach activities, significant improvements were obtained for only two questions, namely "I enjoy science lessons" and "I want to be a scientist in the future." Furthermore, there was a generally strong trend towards a change in attitude for questions that sought information about students' perceptions about scientists (both positive and negative perceptions). In addition, outreach providers reported that their involvement in this public engagement scheme helped them acquire several transferable skills that will be beneficial in their studies and career development. These include vital skills in project and time management, teamwork and public speaking. Altogether, our findings provide novel indications that the development of scientist-school outreach partnerships in Ghana has valuable implications for science education and capacity development.