Guilty and innocent suspects’ strategies during police interrogations

Abstract

Deception detection has largely failed to investigate guilty and innocent suspects’ strategies. In this study, mock suspects (n=82) were interrogated by police trainees (n=82) who either were or were not trained in the technique to strategically use the evidence (the SUE technique). Analyses revealed that guilty suspects to a higher degree than innocent suspects applied strategies in order to appear truthful. Guilty suspects reported diverse strategies, while innocent suspects reported the strategy to tell the truth like it had happened, indicating a belief in the visibility of innocence. The realism in the suspects’ expectation about how their veracity was judged was largely dependent on the way in which they had been interrogated. The truth-telling suspects who were interrogated according to the SUE technique were optimistic about being judged as truthful; this optimism was warranted as the vast majority of them were classified as truthful. The SUE technique seems to help (a) spotting guilty suspects without them being aware of it and (b) spotting innocent suspects, and they become aware of it. That innocent (but not guilty) suspects can read how the interrogator views them is advantageous for the investigative process.     

Testing assumptions about naivety in insurance fraud

Abstract

Despite the recognition that traditional methods of fighting the rising and pressing crime of insurance fraud are ineffective, much attention in the process of its detection is still paid to the characteristics of false claims and of people submitting them. Although there is some research looking into the assumptions insurance companies hold about these characteristics, the question of the general public knowledge about them has been rather neglected. This appears unjustified in light of the fact that it is ‘the average’ opportunistic driver most likely to lie about their loss. The results of this project, employing the method of thematic analysis, whereby the narratives of 25 male drivers are examined, challenge the correctness of corporate assumptions about what the layman driver could know about insurance fraud.     

Understanding financial reporting fraud in Egypt: evidence from the audit field

This study expands our knowledge and understanding of financial reporting fraud in Egypt by drawing on the perceptions of experienced international and Big 4 auditors in that country. In particular, it explores (1) how common financial reporting fraud is in Egypt, (2) the perpetrators and victims of financial reporting fraud in Egypt and (3) how financial reporting fraud is committed and concealed in Egypt. The study sheds light on generic issues that could have implications for auditors and audit regulators. In addition, the study provides a detailed guide on how financial reporting fraud schemes are committed and concealed in Egypt, knowledge of which could help auditors design effective audit tests to assess fraud risk and help those charged with governance to design effective prevention and detection techniques. Egypt could be an attractive destination for international investors, therefore knowledge of the nature and victims of fraud in Egypt could help investors make informed decisions about where to invest their money. The results of this study could also help regulators in Egypt as well as World Trade Organizations determine where to focus their support and enforcement efforts.     

公安边防情报搜集与刑事侦查情报搜集比较研究

随着我国公安边防情报工作与刑事侦查情报工作建国后50多年的发展。两情报部门逐渐认识到情报搜集的重要性,关于公安边防情报搜集与刑事侦查情报搜集的理论和方法正在不断地发展和成熟。因此,通过对公安边防、刑事侦查情报搜集在基本理论、情报源以及情报搜集方法上的比较研究。明确两者在情报搜集上的共性与特殊性,能够更好地促进两者的相互借鉴,以期推进公安边防、刑事侦查情报工作在理论和实践上的共同发展。     

碎浆法检验硅藻的应用

目的探讨一种硅藻检验新技术。方法取材5g,用碎浆法纯机械破机,离心后涂片、镜检。结果除个别羽纹纲硅藻外大部分硅藻纹理清晰、容易辨认,还能灵敏地检出有机硅藻。结论碎浆法检验硅藻技术操作简单、成本低廉、检出率高,对身体和环境几乎无损害。     

Run-specific limits of detection and quantitation for STR-based DNA testing

STR-based DNA profiling is an exceptionally sensitive analytical technique that is often used to obtain results at the very limits of its sensitivity. The challenge of reliably distinguishing between signal and noise in such situations is one that has been rigorously addressed in numerous other analytical disciplines. However, an inability to determine accurately the height of electropherogram baselines has caused forensic DNA profiling laboratories to utilize alternative approaches. Minimum thresholds established during laboratory validation studies have become the de facto standard for distinguishing between reliable signal and noise/technical artifacts. These minimum peak height thresholds generally fail to consider variability in the sensitivity of instruments, reagents, and the skill of human analysts involved in the DNA profiling process over the course of time. Software (BatchExtract) made publicly available by the National Center for Biotechnology Information now provides an alternative means of establishing limits of detection and quantitation that is more consistent with those used in other analytical disciplines. We have used that software to determine the height of each data collection point for each dye along a control sample's electropherogram trace. These values were then used to determine a limit of detection (the average amount of background noise plus three standard deviations) and a limit of quantitation (the average amount of background noise plus 10 standard deviations) for each control sample. Analyses of the electropherogram data associated with the positive, negative, and reagent blank controls included in 50 different capillary electrophoresis runs validate that this approach could be used to determine run-specific thresholds objectively for use in forensic DNA casework.