The showup identification procedure: An exploration of systematic biases

Purpose. Showups are common, yet little research has investigated the biasing factors that may influence showup identifications. We investigated the effects of cross‐race conditions and clothing bias on showup identification decisions. Additionally, we explored identification decisions made in a subsequent lineup dependent on race, clothing, and showup‐target‐presence. Methods. Participants watched a mock crime and were presented with a showup in which suspect race, target‐presence, and the clothing worn by the suspect were varied. Following a delay, participants viewed a target‐present or ‐absent lineup and were asked to make a second identification decision. Results. Presentation of the suspect in the clothing worn by the perpetrator increased choosing rates in both own‐race and other‐race conditions. Despite this, differential patterns of decision response latencies indicated that eyewitnesses may use clothing information differently when making own‐race compared to other‐race identification decisions. No evidence for an own‐race bias in showup identifications was found; however, other‐race lineup identifications were less accurate than own‐race lineup identifications. Further, participants in own‐race and other‐race conditions differed in the extent to which they were affected by multiple identification procedures. Viewing an own‐race innocent suspect in a showup increased subsequent false lineup identifications, while choosing the innocent suspect from the showup was necessary to increase false lineup identifications in other‐race conditions. Conclusions. Different situational factors may affect the identification accuracy of eyewitnesses in own‐race and other‐race conditions for both showup and lineup procedures. Particular caution is advised when showups are clothing‐biased and multiple identification procedures are used.     

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.     

Community Responsibility for Preventing Sexual Violence: A Pilot Study with Campus Greeks and Intercollegiate Athletes

Previous research has noted higher incidences of sexual violence on campus among members of campus Greeks and athletes and the need to do prevention programs with them. This article presents the results of an exploratory pilot study of a sexual violence prevention program with members of one fraternity, sorority, men's and women's intercollegiate athletic team. The program, experimentally evaluated and found to be effective with a general sample of undergraduates, was used to determine its efficacy specifically with Greeks and athletes. The model on which the program is based calls for prevention efforts that take a wider community approach rather than simply targeting individuals as potential perpetrators or victims. Results from repeated-measures analysis of variance indicate that the program worked overall. Future directions are discussed.     

Clarifying Consent: Primary Prevention of Sexual Assault on a College Campus

Although more universities are developing policies for students regarding consent for sexual behavior in response to the problem of sexual violence on campus, many students seem either unaware of these policies or what they mean for actual behavior. Policies are only as effective as peoples' understanding and use of them. The current study aimed to evaluate the utility of a prevention education program focused on teaching students about consent. Two hundred and twenty undergraduates, composing a control group, a shorter treatment group, and a longer one, participated in the study. The findings showed the greatest knowledge gain for participants in the longer treatment group that included a discussion of the policy and participation in an activity dealing with its implications. Implications and future research directions are discussed.     

PAKISTAN (REVIEW ARTICLE)

Victoria Schofield reviews two books on Pakistan:- the third, much revised, edition of Owen Bennett Jones’ Pakistan In the Eye of the Storm and Hilary Synnott's Transforming Pakistan, Ways out of Instability. Both books are arranged thematically and are full of useful information. They underline how important it is for outsiders to understand the course of recent events. For even though the problems facing Pakistan can in the end only be resolved by Pakistanis, outsiders undoubtedly have a crucial role to play.     

An STR database on the Volga-Ural population

This work develops a reference STR database on the Volga-Ural population, Russia, comprised of 640 individuals that were sampled from eight ethnic groups (Finno-Ugric Mari, Mordva-Moksha, Mordva-Erzja, Komi-Permjak, and Udmurt, and Turkic-speaking Bashkir, Tatar-Mishary, and Chuvash) and typed with 10 autosomal STR markers: TH01, CSF1P0, FGA, vWA, D3S1358, TPOX, D16S539, D8S1179, D13S317, FES. The groups differentiate in allele frequencies, and therefore we computed θ-values between allele frequencies in each ethnic groups and those in the database as a measure of their differentiation. Nevertheless, the Volga-Ural ethnic groups form a relatively compact cluster that greatly deviate from the Romanic Moldovans and the Turkic Yakuts, taken for comparison, and are closer to the Slavic Russians, Belarusians, and Ukrainians, although significantly differ from those as well.     

Suicide by Fatal Pentobarbital Intoxication in Ontario,Canada, from 2012 to 2015

A fatal concentration of pentobarbital found in a coroner's case where the history had not indicated use of this drug prompted a review of fatalities in Ontario from 2012 to 2015. Coroner's case files, including police and toxicology reports, were reviewed in twenty deaths, in which pentobarbital was identified as the primary cause of death. In all of the deaths (11 females, 9 males), the blood concentration of pentobarbital was greater than 10 mg/L. There were three to eight deaths per year and each was classified as suicide. In 11 cases, there was clear evidence that the drug was purchased over the internet from Mexico or China and imported into Canada. In four cases, it appears that the pentobarbital was labeled as a different, innocuous chemical to facilitate crossing the border without scrutiny. The findings underscore the value of a thorough scene investigation, including details of evidence that may be considered unrelated.     

Lay Participation in Danish Crime Trials: On the Interaction between Lay and Professional Judges during Deliberation

While there is abundant research on common law jury systems, we know less about lay participation in civil law crime trials, often called ‘mixed courts’ or alternately ‘mixed tribunals'. Here, a professional judge and a number of lay judges deliberate together on the issues of guilt and sentencing. This joint deliberation has naturally led both public opinion and research to focus on power relations such as lay judges’ dependence on the professional judges. Based on an ethnographic study of deliberation processes, the present article offers a different perspective on lay judges’ contribution and argues that their decision making rests on a hybrid construction of knowledge in the continuous interaction between the professional judge and lay participants during deliberation. The analysis of this decision‐making process contributes to our understanding of how ordinary people selected for this civic duty create knowledge about justice.     

Armed and academic: Perceptions of college students on concealed carry on campus policies

Following the 2007 shooting at Virginia Tech, policymakers have sought ways to improve safety on college and university campuses nationwide. Among the more recent proposals is to permit concealed handgun licensees to carry on campus. To date, eight states have enacted legislation implementing this measure. A limited body of research considers the perceptions of students and other members of the campus community about these laws and their passage. The present study seeks to offer a new perspective, assessing student opinions about the recently passed legislation in Texas and whether they would support such a law in a state with strict gun control measures in place. The results indicate that while students collectively did not support concealed carry on their campus, males, Republicans, and gun owners were significantly more likely to express attitudes favorable of the law. Policy implications for its implementation, as well as limitations of the study, are considered.     

Skeletal Trauma Resulting From Fatal Low (≤3 m) Free Falls: An Analysis of Fracture Patterns and Morphologies

The skeletal trauma resulting from fatal low (≤3 m) free falls is poorly researched and understood by forensic practitioners. The aim of this study was to identify the types of skeletal trauma resulting from low falls through investigating fracture patterns and morphologies. Skeletal trauma was analyzed using full‐body postmortem computed tomography scans of 145 individuals who died from a low free fall. Trauma was then contextualized to the variables that influence how a person falls using multiple logistic regression. Results showed fracture patterning primarily involved the axial skeleton and that there were a number of patterns significantly associated with the height fallen, pre‐existing health conditions, and age. Analysis of fracture morphologies showed 108 possible fracture types, six of which were significantly associated with the height fallen. Understanding the skeletal trauma characteristic of low free falls will further inform anthropological interpretations of trauma in cases where a fall may be considered the possible mechanism.