Face recognition as a function of distance and illumination: A practical tool for use in the courtroom

Abstract

This paper describes a practical courtroom tool that provides insight in face recognition accuracy as a function of distance and illumination. Subjects were shown 3/4 target portraits with an exposition time of 12 seconds, immediately followed by a target-absent or target-present lineup of six full-face portraits. Subjects were asked to identify the target. Seven distances (3 to 40 meter) and nine illumination levels (0.3 to 3000 lux) were used which resulted in a 7?9 matrix, with in the cells a hit score and a false alarm score. From these rough data several other measures were derived, like d-prime, diagnostic value and some idealised scores. The scores represent the upper margins of recognition accuracy with the memory component reduced to a minimum. The results clearly indicate a systematic increase of recognition performance with decreasing distance and increasing illumination. The end result is a practical rule of thumb, the Rule of Fifteen: Even in ideal conditions the desired diagnostic value of 15 is reached at not more than 15 meters, not less than 15 lux.     

Progressiveness and the New Right: The Electoral Relevance of Culturally Progressive Values in the Netherlands

Whereas electoral support for new-rightist parties is often understood as driven by ethnocentric anti-immigrant sentiments, scholars have noted that new-rightist politicians have, surprisingly, stressed culturally progressive arguments in the last decade. Using recent Dutch survey data (N = 1,302) especially collected for this purpose, the article analyses the electoral relevance of three types of cultural progressiveness for voting for the new right and their relation to the well-documented anti-immigrant agenda. The analysis shows that neither moral progressiveness nor aversion to public interference of religious orthodoxy underlies the new-rightist vote. Support for freedom of speech proves relevant, but, in accordance with literature on the new right’s electoral strategy and with theorising on framing, this only leads towards the new right among those who are ethnocentric. These findings are discussed in the light of electoral competition, and questions for further research are formulated.     

Comments to the CoE Convention 108 draft proposal on data protection

One year after the public consultation on the modernisation of the Convention 108, the Council of Europe issued the latest modernization proposal in March 2012 reviewed on the basis of the 27th Plenary meeting of the Consultative Committee of the Convention (from 29 November to 2 December 2012) and the 26th meeting of its Bureau (from 6 to 8 February 2012). Professor Graham Greenleaf and Mr. Nigel Waters on behalf of the Australian Privacy Foundation International Committee and a consortium headed by CLSR Editorial Board member Professor Sylvia Kierkegaard together with Dr. Elisabeth Thole, Professor Dr. Willem Grosheide and CLSR Professional Board Member Joseph V. DeMarco submitted separately their comments to the proposed text. Plenary meeting of the Consultative Committee of the Convention 108 will take place in Strasbourg from 19 to 22 June 2012, during when the draft text will be approved.     

Risk of Revictimization of Intimate Partner Violence: The Role of Attachment, Anger and Violent Behavior of the Victim

Victims of intimate partner violence (IPV) are known to be at high risk for revictimization. Yet, to date, the mechanisms explaining the link between victimization and revictimization of IPV have not been extensively studied. In the present prospective study involving 74 female help-seeking victims of IPV, we investigated victim-related psychological mechanisms that may underlie this link. With this study, we aim to contribute to the development of theory addressing these psychological mechanisms and their role in explaining risk for IPV revictimization. Hypotheses regarding possibly relevant psychological mechanisms were derived from two conflicting approaches to IPV: the gender perspective, and the mutual IPV perspective. Results lend further support to the mutual IPV perspective, since our final prediction model indicates that victim-perpetrated IPV is an important risk factor for physical and psychological IPV revictimization. An avoidant attachment style shows to be a strong predictor as well, in particular for victims with high and average anger levels. Findings provide clear indications for risk assessment and treatment of IPV victims, and moreover offer opportunities to empower these victims in order to prevent future violence.     

Choosing free trade without amending the U.S. Constitution

This paper documents the functioning of the market in trade protection. It uses a narrative approach to demonstrate that politicians respond to the demands of special interests by forcing open foreign markets and by closing domestic markets. In the process government officials violate property rights, disregard economic logic, damage the world trading system, multiply rent-seeking costs, and destroy wealth. Such outcomes imply that there is a constitutional failure, and that the rules and institutions governing international trade need to be reformed. This paper discusses several such changes and considers how consumers could be mobilized to support them.