Repeatability and reproducibility of comparison decisions by firearms examiners

In a comprehensive study to assess various aspects of the performance of qualified forensic firearms examiners, volunteer examiners compared both bullets and cartridge cases fired from three different types of firearms. They rendered opinions on each comparison according to the Association of Firearm & Tool Mark Examiners (AFTE) Range of Conclusions, as Identification, Inconclusive (A, B, or C), Elimination, or Unsuitable. In this part of the study, comparison sets used previously to characterize the overall accuracy of examiners were blindly resubmitted to examiners to assess the repeatability (105 examiners; 5700 comparisons of bullets and cartridge cases) and reproducibility (191 examiners of bullets, 193 of cartridge cases; 5790 comparisons) of firearms examinations. Data gathered using the prevailing AFTE Range were also recategorized into two hypothetical scoring systems. Consistently positive differences between observed agreement and expected agreement indicate that the repeatability and reproducibility of examiners exceed chance agreement. When averaged over bullets and cartridge cases, the repeatability of comparison decisions (involving all five levels of the AFTE Range) was 78.3% for known matches and 64.5% for known nonmatches. Similarly averaged reproducibility was 67.3%% for known matches and 36.5% for known nonmatches. For both repeatability and reproducibility, many of the observed disagreements were between a definitive and inconclusive category. Examiner decisions are reliable and trustworthy in the sense that identifications are unlikely when examiners are comparing non-matching items, and eliminations are unlikely when they are comparing matching items.     

Not searching,but finding: how innovation shapes perceptions about universities and public research organisations

Previous research about firms’ perceptions on the usefulness of public research has not distinguished between technological innovators and non-innovators. With the exception of openness of search, we find that factors shaping such perceptions differ in both types of firms. Non-innovators need market power and the presence of an R&D department to profit from public knowledge. Innovators need less sheltered environments and lesser R&D effort, though the availability of resources and absorptive capacity is necessary. Using a sample of 1,031 Spanish manufacturing firms, we conclude that practical experience in technological innovation enhances firms’ perceptions on the usefulness of public research, not directly but by enabling certain internal changes, i.e. it produces encounters between corporate choices and public research.     

Police Officers Do Not Need More Training; But Different Training. Policing Domestic Violence and Abuse Involving Children: A Rapid Review

Journal of Family Violence - Although the police have been identified as a key service provider when responding to domestic violence and abuse (DVA), very few studies have investigated their...     

Effect of Substrate Interferences from High‐Density Polyethylene on Association of Simulated Ignitable Liquid Residues with the Corresponding Liquid

The effect of substrate interferences from high‐density polyethylene (HDPE) on the ability to associate an ignitable liquid residue with the corresponding liquid standard, using statistical procedures, is demonstrated. Gasoline, kerosene, and lighter fluid, at three different evaporation levels, were spiked onto HDPE and subsequently burned to generate simulated ignitable liquid residues (ILRs). Samples were extracted using a passive headspace procedure and analyzed by gas chromatography–mass spectrometry. The total ion chromatograms were subjected to data pretreatment procedures prior to principal components analysis and Pearson product moment correlation. Using the combination of these statistical procedures, simulated ILRs were successfully associated with the corresponding liquid type, despite the presence of compounds inherent to the HDPE substrate, as well as those resulting from pyrolysis of the substrate.     

Parliamentary control of CSDP: the case of the EU's fight against piracy off the Somali coast

Parliamentary involvement remains a key tool for the democratic control of executive policies. This article explores the web of parliamentary involvement in decision-making on European Union (EU) military operations, using insights gained in an in-depth case study on the EU's anti-piracy mission Atalanta. We find that parliaments at all levels became involved only after key political decisions had already been made. At the member state level, we find highly uneven involvement with only some parliaments being very well informed and closely monitoring, if not influencing government policy. The European Parliament became active only after the launch of the mission but then scrutinised it intensely, profiting (in contrast to national parliaments) from its access to top military officials and key decision-makers. Finally, transnational parliamentary assemblies as well as more informal networks provided opportunities to transmit information across the boundaries of individual parliaments and party-groups thus potentially enhancing the ability of parliamentarians to scrutinise government policies.     

Social Norms Theory,Enforcement, and Management Concepts: An Analysis of Local Smoking Ban Ordinances

Although there is substantial research on the consequences of smoking and the economic loss resulting from tobacco use, there is a scarcity of work on the enforcement of smoking ordinances at the local level. As municipalities around the country pass ordinances restricting smoking in public places, research should be conducted to understand enforcement outcomes. This article examines the management concepts being employed by managers in the enforcement of smoking ordinances. This article shows that management concepts are salient in policy enforcement and are employed to manage smoking enforcement ordinances. The theory of social norms is used to explain this phenomenon.     

Book Reviews

Abstract

Underground movements in a struggle for political independence experience processes of crystallization as well as schism. Many times, severe struggles develop in these groups and focus on issues of leadership, operations, and ideology. The success of these movements in achieving their explicit goals depends on their ability to develop an effective mechanism(s) for inner conflict(s) resolution(s). Such inner conflicts and tensions can change, in the most profound way, the way an underground movement Junctions, its ability to attract and recruit new members, and its survivability. Lehi was one of the three prestate Jewish underground groups in Palestine (the two others were the Hagana and Etzel), struggling against the British and the Arabs with the explicit goal of establishing a new Jewish state. Lehi was established in the summer of 1940 and, in the autumn and winter of 1942, was already in an advanced stage of disintegration due to the British success in arresting or killing most of its members and leadership. In the summer of 1942, two leaders of Lehi—Itzhak Yazernitzky‐Shamir and Eliahu Giladi—escaped from the British detention camp in Mazra and revived Lehi. During 1942, a severe conflict developed between these two leaders, focusing on issues of leadership, operations, and ideology. Consequently, Shamir instructed his men to kill Giladi, who was assassinated in the summer of 1943. This paper traces the development of this conflict in a political and historical context and examines the consequences of the assassination. The main conclusion is that the death of Giladi had a major impact on the reemerging Lehi.     

The measurement and influence of child sexual abuse supportive beliefs

Abstract

The identification of offence-related cognition is a major target of most cognitive–behavioural treatment programmes for sexual offenders, and a number of measures are available for this purpose. This study assessed the psychometric properties of a brief measure of beliefs that support and justify child sexual abuse: the Sex With Children (SWCH) scale. Factor analysis revealed two distinct types of belief: that sex with children is harmless, and that children actively provoke adults into having sex with them. The SWCH was also found to have good internal consistency, test–retest reliability and concurrent validity. Child molesters scored significantly more highly on the SWCH than did rapists or non-offenders, and high-risk child molesters reported more entrenched offence-supportive beliefs than lower risk child molesters. A relationship was also observed between general offence-supportive beliefs as measured by SWCH and offence-specific cognitions ascribing responsibility or enjoyment to the offender's victim. The SWCH subscales appeared to closely match two of the implicit theories hypothesized by Ward and Keenan (1999 Ward, T. and Keenan, T. 1999. Child molesters’ implicit theories. Journal of Interpersonal Violence, 14: 821–838. [Crossref], [Web of Science ®] , [Google Scholar]) to be related to child molestation. Sex offender treatment providers need to be aware of the relationship between underlying implicit theories and offence-specific distorted cognitions about the victim's experience.     

Predicting verdicts,adherence to judge's instructions,and assumptions about the disposition of the defendant in a case involving the insanity defense

Abstract

296 college students and jury eligible adults completed attitudinal measures and read a case summary of a murder trial involving the insanity defense. The case summary included opening and closing arguments, testimony from expert witnesses, and judge's instructions. Although broader legal attitudes (the PJAQ) predicted verdicts, the Insanity Defense Attitudes-Revised scale provided incremental predictive validity. Attitudes related to the insanity defense also predicted adherence to judge's instructions, whereas more general legal biases predicted a juror's willingness to change their verdict after being provided with accurate information about the defendant's disposition following the verdict. Importantly, misconceptions concerning the insanity defense impacted verdicts and many jurors made decisions that failed to adhere to the judge's instructions, though the nullification tendency does appear to vary as a function of pretrial juror attitudes. Implications for instructing jurors in insanity defense cases will be discussed.     

Protecting Childhood: Rights,Social Goals and the First Amendment in the Context of the Child Online Protection Act

In Dun & Bradstreet v. Greenmoss Builders, the Supreme Court of the United States reintroduced a subject matter test into libel law, holding that private figures defamed in the discussion of matters of private concern did not need to prove actual malice to collect punitive or presumed damages. The sweeping language of some of opinions, coupled with the Supreme Court's references to subject matter in subsequent cases, led to confusion over whether and how constitutional protections apply in private plaintiff-private issue cases. This article explores how lower federal and state appellate courts have interpreted Dun & Bradstreet and offers three alternate solutions to appropriately balance the First Amendment rights of defendants with the reputational interests of private plaintiffs in cases arising from the discussion of matters of private concern.