Evaluating interviews which search for the truth with suspects: but are investigators’ self-assessments of their own skills truthful ones?

Self-evaluation of one’s own performance has been found in prior research to be an enabler of professional development. The task of evaluation is also a core component of a model of the investigative interviewing of victims, witnesses and suspects, being increasingly used throughout the world. However, it remains the case that there has been little research as to how practitioners approach the task itself. The present study examined the topic through the lens of observing how effectively 30 real-life investigators in the UK undertook evaluation of their interviews, representing almost the entire investigative frontline workforce of a small law enforcement agency in this country. Using an established scale of measurement, both investigators’ and an expert’s ratings of the same sample of interviews were compared across a range of tasks and behaviours. It was found that in almost all the assessed behaviours, requiring of the investigators to provide a self-rating, their scores tended to significantly outstrip those applied to the sample by the expert. Reasons are explored for the investigators’ overstated assessments. Implications for practice are then discussed.     

Supervisory experience and data points: implementation barriers,risk assessment and correctional professionals

Drawing on interviews with 24 correctional practitioners who use risk assessment instruments daily, we examine barriers to the use and implementation of these instruments. Findings reveal that practitioners have confidence in the state of risk assessment generally, but are skeptical about risk assessment on the job due to limited resources. They also point to barriers that inhibit their effectiveness including recognition of population heterogeneity, predictive misspecification due to data lags and overemphasis on stable predictors, and lacking guidance on appropriate use of vast available data. Instruments for measuring risk serve purposes beyond those intended by the social scientists who developed measures. We conclude with lessons for increasing the utility and legitimacy of risk assessments and with a call for incorporating latent uses of assessments into design.     

Sexual assault complainants on the stand: a historical comparison of courtroom questioning

Because most cases of alleged sexual assault involve few sources of evidence, the complainant’s testimony is crucial. In line with empirical research findings, the way in which police question sexual assault complainants has evolved to ultimately maximise both the completeness and accuracy of evidence. But has courtroom questioning changed over time? To answer this question, we compared the courtroom questioning of sexual assault complainants in the 1950s to that used in cases from the turn of the twenty-first century. Overall, lawyers in contemporary cases asked complainants more questions and uttered more words than they did historically. Complainants, too, appear to have become more vocal over time. Across the two time periods, the questioning style used by prosecuting lawyers has shifted towards a more open style. In stark contrast, the format of cross-examination questions has remained remarkably consistent over time, with leading questions still making up the bulk of the questions asked. These findings have important implications for future legal reform and legal practice.     

Homegrown Terrorism in Canada: Local Patterns,Global Trends

The article examines how global trends related to militant Islamism have influenced patterns of homegrown terrorism in Canada. It seeks to understand how an evolving movement has shaped three case studies, two cases of homegrown terrorism, the case of Momin Khawaja, the “Toronto 18” plot, and the emerging trend of extremist travelers. Recognizing the notable gap in the literature, a growing number of cases of homegrown terrorism and extremism in Canada suggest that further study is required. The article asks why Canadians choose to participate in this movement and why militant Islamist movements are actively recruiting them.     

Public Policy Analysis in Contemporary France: Academic Approaches, Questions and Debates

Today French academic studies of government are dominated by a particular form of public policy analysis which cannot be explained using literal translations. Instead this article endeavours to explain the nature of French research carried out in this vein by tracing its development over the last thirty years and focusing in particular upon the role of conflict within political science and sociology. Despite the considerable strengths of public policy analysis, however, doubts have recently emerged as to its capacity to adapt to the theoretical and empirical challenges raised by contemporary politics     

Cadmium-free quantum dots in aqueous solution: Potential for fingermark detection,synthesis and an application to the detection of fingermarks in blood on non-porous surfaces

The use of quantum dots (QDs) in the area of fingermark detection is currently receiving a lot of attention in the forensic literature. Most of the research efforts have been devoted to cadmium telluride (CdTe) quantum dots often applied as powders to the surfaces of interests.Both the use of cadmium and the nano size of these particles raise important issues in terms of health and safety. This paper proposes to replace CdTe QDs by zinc sulphide QDs doped with copper (ZnS:Cu) to address these issues. Zinc sulphide–copper doped QDs were successfully synthesized, characterized in terms of size and optical properties and optimized to be applied for the detection of impressions left in blood, where CdTe QDs proved to be efficient. Effectiveness of detection was assessed in comparison with CdTe QDs and Acid Yellow 7 (AY7, an effective blood reagent), using two series of depletive blood fingermarks from four donors prepared on four non-porous substrates, i.e. glass, transparent polypropylene, black polyethylene and aluminium foil. The marks were cut in half and processed separately with both reagents, leading to two comparison series (ZnS:Cu vs. CdTe, and ZnS:Cu vs. AY7). ZnS:Cu proved to be better than AY7 and at least as efficient as CdTe on most substrates. Consequently, copper-doped ZnS QDs constitute a valid substitute for cadmium-based QDs to detect blood marks on non-porous substrates and offer a safer alternative for routine use.