Abstract The current study surveyed a random sample of Texas law enforcement officers (n?=?109) about their knowledge regarding behaviors indicative of deception. The officers were not highly knowledgeable about this topic, overall performing at a chance level in assessing how various behavioral cues relate to deception. Confidence in one's skill was unrelated to accuracy, and officers who reported receiving the most training and utilizing these skills more often were more confident but no more accurate in their knowledge of the behaviors that typically betray deception. The authors compare these results to previous studies that have examined officers’ beliefs in other countries and discuss the implication of these results in terms of developing future training programs that may debunk the common misconceptions that officers possess. 相似文献
The forensic science community raised the need for improved evidence recognition, collection, and visualization analytical instrumentation for field and laboratory use. While the 3D optical techniques for imaging static objects have been extensively studied, there is still a major gap between current knowledge and collecting high‐quality footwear and tire impression evidence. Among optical means for 3D imaging, digital fringe projection (DFP) techniques reconstruct 3D shape from phase information, achieving camera‐pixel spatial resolution. This paper presents a high‐resolution 3D imaging technology using DFP techniques dedicated to footwear and tire impression capture. We developed fully automated software algorithms and a graphical user interface (GUI) that allow anyone without training to operate for high‐quality 3D data capture. We performed accuracy evaluations and comparisons comparing with the commercial high‐end 3D scanner and carried out qualitative tests for various impressions comparing with the current practices. Overall, our technology achieves similar levels of accuracy and resolution with a high‐end commercially available 3D scanner, while having the merits of being (1) more affordable; (2) much easier to operate; and (3) more robust. Compared with the current practice of casting, our technology demonstrates its superiority because it (1) is non‐destructive; (2) collects more evidence detail than casts, especially when an impression is fragile; (3) requires less time and money to collect each piece of evidence; and (4) results in a digital file that can easily be shared with other examiners. 相似文献
In the present studies, we aimed to show that the perceived procedural fairness of societal actors’ multicultural decisions promotes ethnic minority members’ societal identification. These enhanced identification levels, in turn, contribute to better psychological health and well-being. Firstly, a vignette study in a sample of African Americans explored the effect of procedural fairness climate on identification. The second and third studies used self-report questionnaires. Study 2 consisted of a sample of sojourners in a university context, Study 3 analyzed online data through an African American sample. The studies provided evidence for the effect of procedural fairness climate on increased societal identification, which in turn mediates the fairness effect on increased well-being and psychological health. Societal actors can use procedural fairness to increase well-being when making decisions that involve ethnic minorities.
A heated debate developed in South Africa as to the meaning of ‘deliberative democracy’. This debate is fanned by the claims of ‘traditional leaders’ that their ways of village-level deliberation and consensus-oriented decision-making are not only a superior process for the African continent as it evolves from pre-colonial tradition, but that it represents a form of democracy that is more authentic than the Western version. Proponents suggest that traditional ways of deliberation are making a come-back because imported Western models of democracy that focus on the state and state institutions miss the fact that in African societies state institutions are often seen as illegitimate or simply absent from people's daily lives. In other words, traditional leadership structures are more appropriate to African contexts than their Western rivals. Critics suggest that traditional leaders, far from being authentic democrats, are power-hungry patriarchs and authoritarians attempting to both re-invent their political, social and economic power (frequently acquired under colonial and apartheid rule) and re-assert their control over local-level resources at the expense of the larger community. In this view, the concept of deliberative democracy is being misused as a legitimating device for a politics of patriarchy and hierarchy, which is the opposite of the meaning of the term in the European and US sense. This article attempts to contextualise this debate and show how the efforts by traditional leaders to capture an intermediary position between rural populations and the state is fraught with conflicts and contradictions when it comes to forming a democratic state and society in post-apartheid South Africa. 相似文献
I analyze the choice politicians face when seeking votes from groups that lobby for sales tax rate decreases or tax exemptions, given the constraint that politicians want to raise a certain amount of revenue. Using data on sales taxes, I develop a model predicting a positive relationship between the number of exemptions and the sales tax rate. The estimation results provide support for this prediction. Each additional exemption is associated with an increase of between 0.10 and 0.25 percentage points in the tax rate.
