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"CRIMINAL INVESTIGATION"
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Key challenges in criminal investigation
Analyses challenges in criminal investigation carried out by the police in the UK. It is the first work to link investigative current influences on policing and the evidence-based agenda. It traces the development, training and education of the detective. Investigative decision-making and the legal framework are also analysed.
Book
Criminal Investigation
Criminal investigation is an essential topic, running through the new national policing curriculum from volume crime to serious organised criminality. This book provides accessible and comprehensive coverage, with case studies and examples to embed understanding, clear links between theory and practice, and a range of critical thinking and review activities. It examines investigation from inception to conclusion, detailing methods, explaining legal requirements and reflecting on past investigations. The contributory roles of specialists and forensic support are examined to provide an inclusive overview of the whole investigative process.The Professional Policing Curriculum in Practice is a new series of books that match the requirements of the new pre-join policing qualifications. The texts reflect modern policing, are up-to-date and relevant, and grounded in practice. They reflect the challenges faced by new students, linking theory to real-life operational practice, while addressing critical thinking and other academic skills needed for degree-level study.
eBook
Strengthening Forensic Science in the United States
Scores of talented and dedicated people serve the forensic science community, performing vitally important work. However, they are often constrained by lack of adequate resources, sound policies, and national support. It is clear that change and advancements, both systematic and scientific, are needed in a number of forensic science disciplines to ensure the reliability of work, establish enforceable standards, and promote best practices with consistent application. Strengthening Forensic Science in the United States: A Path Forward provides a detailed plan for addressing these needs and suggests the creation of a new government entity, the National Institute of Forensic Science, to establish and enforce standards within the forensic science community.
The benefits of improving and regulating the forensic science disciplines are clear: assisting law enforcement officials, enhancing homeland security, and reducing the risk of wrongful conviction and exoneration. Strengthening Forensic Science in the United States gives a full account of what is needed to advance the forensic science disciplines, including upgrading of systems and organizational structures, better training, widespread adoption of uniform and enforceable best practices, and mandatory certification and accreditation programs.
While this book provides an essential call-to-action for congress and policy makers, it also serves as a vital tool for law enforcement agencies, criminal prosecutors and attorneys, and forensic science educators.
eBook
Link Prediction in Criminal Networks: A Tool for Criminal Intelligence Analysis
The problem of link prediction has recently received increasing attention from scholars in network science. In social network analysis, one of its aims is to recover missing links, namely connections among actors which are likely to exist but have not been reported because data are incomplete or subject to various types of uncertainty. In the field of criminal investigations, problems of incomplete information are encountered almost by definition, given the obvious anti-detection strategies set up by criminals and the limited investigative resources. In this paper, we work on a specific dataset obtained from a real investigation, and we propose a strategy to identify missing links in a criminal network on the basis of the topological analysis of the links classified as marginal, i.e. removed during the investigation procedure. The main assumption is that missing links should have opposite features with respect to marginal ones. Measures of node similarity turn out to provide the best characterization in this sense. The inspection of the judicial source documents confirms that the predicted links, in most instances, do relate actors with large likelihood of co-participation in illicit activities.
Journal Article
Do professional facial image comparison training courses work?
Facial image comparison practitioners compare images of unfamiliar faces and decide whether or not they show the same person. Given the importance of these decisions for national security and criminal investigations, practitioners attend training courses to improve their face identification ability. However, these courses have not been empirically validated so it is unknown if they improve accuracy. Here, we review the content of eleven professional training courses offered to staff at national security, police, intelligence, passport issuance, immigration and border control agencies around the world. All reviewed courses include basic training in facial anatomy and prescribe facial feature (or 'morphological') comparison. Next, we evaluate the effectiveness of four representative courses by comparing face identification accuracy before and after training in novices (n = 152) and practitioners (n = 236). We find very strong evidence that short (1-hour and half-day) professional training courses do not improve identification accuracy, despite 93% of trainees believing their performance had improved. We find some evidence of improvement in a 3-day training course designed to introduce trainees to the unique feature-by-feature comparison strategy used by facial examiners in forensic settings. However, observed improvements are small, inconsistent across tests, and training did not produce the qualitative changes associated with examiners' expertise. Future research should test the benefits of longer examination-focussed training courses and incorporate longitudinal approaches to track improvements caused by mentoring and deliberate practice. In the absence of evidence that training is effective, we advise agencies to explore alternative evidence-based strategies for improving the accuracy of face identification decisions.
Journal Article
Chasing a serial killer : be a criminal profiler
Learn how a criminal profiler uses the investigative process and clues left behind at a crime scene to predict the next moves of a serial killer.
Book
Mafia and Public Spending: Evidence on the Fiscal Multiplier from a Quasi-Experiment
A law issued to combat political corruption and Mafia infiltration of city councils in Italy has resulted in episodes of large, unanticipated, temporary contractions in local public spending. Using these episodes as instruments, we estimate the output multiplier of spending cuts at provincial level—controlling for national monetary and fiscal policy, and holding the tax burden of local residents constant—to be 1.5. Assuming that lagged spending is exogenous to current output brings the estimate of the overall multiplier up to 1.9. These results suggest that local spending adjustment may be quite consequential for local activity.
Journal Article