Consensus on validation of forensic voice comparison

Since the 1960s, there have been calls for forensic voice comparison to be empirically validated under casework conditions. Since around 2000, there have been an increasing number of researchers and practitioners who conduct forensic-voice-comparison research and casework within the likelihood-ratio framework. In recent years, this community of researchers and practitioners has made substantial progress toward validation under casework conditions becoming a standard part of practice: Procedures for conducting validation have been developed, along with graphics and metrics for representing the results, and an increasing number of papers are being published that include empirical validation of forensic-voice-comparison systems under conditions reflecting casework conditions. An outstanding question, however, is: In the context of a case, given the results of an empirical validation of a forensic-voice-comparison system, how can one decide whether the system is good enough for its output to be used in court? This paper provides a statement of consensus developed in response to this question. Contributors included individuals who had knowledge and experience of validating forensic-voice-comparison systems in research and/or casework contexts, and individuals who had actually presented validation results to courts. They also included individuals who could bring a legal perspective on these matters, and individuals with knowledge and experience of validation in forensic science more broadly. We provide recommendations on what practitioners should do when conducting evaluations and validations, and what they should present to the court. Although our focus is explicitly on forensic voice comparison, we hope that this contribution will be of interest to an audience concerned with validation in forensic science more broadly. Although not written specifically for a legal audience, we hope that this contribution will still be of interest to lawyers.     

The results of a randomized controlled trial of police body-worn video in Australia

Journal of Experimental Criminology - We report the results of a randomized controlled trial of police body-worn video (BWV) cameras in an Australian context, with a focus on how cameras influence...     

Violence,Nonviolence, and the Effects of International Human Rights Law

Under what conditions are individuals more likely to approve of human rights abuses by their governments? While various theoretical expectations have been offered about public approval of repression, many of them have not been directly tested. We analyze the effects of differing opposition tactics, differing government tactics, and legal constraints on approval of repression through a series of survey experiments in India, Israel, and Argentina. Our results indicate that violent action by opposition groups consistently increases support for government repression. In the context of contentious politics, we find that the effects of international law vary by national context. While our respondents in India were less likely to approve of their government when told the government violated international law, the same information likely increased approval of the government in our Israel experiment. The findings provide insights into the microfoundations of existing theories and suggest areas for theory refinement.     

Status Quo Bias or Institutionalisation for Reversibility?: The EU's Political Conditionality,Post-Accession Tendencies and Democratic Consolidation in Slovakia

The EU's political conditions have been a consistent and at times salient element in the accession process, since Brussels enlarged their scope and tightened procedures from the mid-1990s. But so far little attention has been given to post-accession compliance with these conditions. This is important, for while the European Commission no longer monitors them, the political conditions were imperfectly implemented by the time of the 2004 enlargement. The question that therefore arises is whether compliance continues or whether there are any tendencies to reverse the process. Using a comparative approach based on four alternative hypotheses, this problem is explored in detail using the case of Slovakia, a country where the EU has been a prominent factor in its return to the path of democratisation after the Me?iar years. Comparing Slovakia's performance on the EU political conditions before EU entry in 2004 and during the three years after, two competing approaches, ‘rationalist’ and ‘constructivist’, are assessed. It is found that the fears of the rationalists have not been strongly justified nor have the hopes of the constructivists been much encouraged. The outcome of political conditionality is related to democratic consolidation in Slovakia, and the conclusion is that the former assisted the latter despite its limitations but much more with respect to reforming institutions than to changing either attitudes or behaviour.     

Factors affecting the sustainability of a community water supply project in Kenya

This paper examines how three sustainability factors (water supply, regulatory policy, local management) are affecting the sustainability of a community water supply project in Kenya. Findings show that after 10 years the project is at a threshold of sustainability – it may yet fail. Changing rainfall patterns and additional withdrawals from new projects are threatening available water supply. The community is resisting compliance with water sector reforms including those intended to benefit community-managed projects. Community management deficiencies and a lack of supportive external relationships are impeding project continuity and sustainable local water management.