Identifying Counterfeit Cigarettes Using Environmental Pollen Analysis: An Improved Procedure*

Traditional pollen preparation techniques provide clear residues for pollen identification; however, such methods are time-consuming, requiring repeated centrifugation, heating, and digestion with high-concentration hazardous chemicals. Tobacco leaves can effectively trap environmental pollen due to hairy surface and terpene-rich exudates. A new tobacco sample processing method was developed by using different extraction chemistry with surfactant. Marlboro Gold cigarettes were employed as model samples for method development. Parameters critical for pollen extraction, which include number of cigarette sticks used, extraction solution, and extraction temperature, were optimized. By using 1% dishwashing detergent to treat three cigarettes at room temperature, the improved method was able to recover sufficient pollen for microscopic analysis in three repeated centrifuge-washing steps and omit hazardous chemicals involved in traditional methods. We focused on the pollen of common ragweed (Ambrosia artemisiifolia), a plant native to North America, as an indicator to differentiate genuine and counterfeit U.S. brand cigarettes. Results from analyzing randomly purchased genuine (authenticated by forensic examination) and known counterfeit Marlboro Gold provided by law enforcement revealed that a significant amount (39%) of Ambrosia were consistently present in all genuine samples, while counterfeit contained none or only trace count. Similar results were found in other counterfeit U.S. brand cigarettes (all seized in the U.S.) involved in this study as well. Lack of Ambrosia in cigarette strongly indicates the product was not originated in the United States.     

The Development of Ethnic/Racial Self-Labeling: Individual Differences in Context

Ethnic/racial self-labeling represents one’s knowledge of and preference for ethnic/racial group membership, which is related to, but distinguishable from, ethnic/racial identity. This study examined the development of ethnic/racial self-labeling over time by including the concept of elaboration among a diverse sample of 297 adolescents (Time 1 mean age 14.75, 67% female, 37.4% Asian or Asian American, 10.4% Black, African American, or West Indian, 23.2% Hispanic or Latinx, 24.2% White, 4.4% other). Growth mixture modeling revealed two distinct patterns—low and high self-labeling elaboration from freshman to sophomore year of high school. Based on logistic regression analyses, the level of self-labeling elaboration was generally low among the adolescents who were foreign-born, reported low levels of ethnic/racial identity exploration, or attended highly diverse schools. We also found a person-by-context interaction where the impact of school diversity varied for foreign-born and native-born adolescents (b?=?12.81, SE?=?6.30, p?<?0.05) and by the level of ethnic/racial identity commitment (b?=?14.32, SE?=?6.65, p?<?0.05). These findings suggest varying patterns in ethnic/racial self-labeling elaboration among adolescents from diverse backgrounds and their linkage to individual and contextual factors.     

Restoring trust in the police: Why female officers reduce suspicions of corruption

Recent studies show a clear link between women in government and reduced concerns about corruption. Until now, it remains unclear which underlying attitudes about women explain the perception that they will reduce corruption. Using a survey question about adding women to a police force, with an embedded experimental treatment, we examine three distinct stereotypes that might explain the power of women to reduce concerns about corruption: gender stereotypes of women as more ethical and honest, the perception of women as political outsiders, and beliefs that women are generally more risk averse. We find that people do perceive women as more effective at combating corruption, and these perceptions are greatly enhanced when information about women's outsider status and risk aversion is provided.     

African–American Parents’ Racial and Ethnic Socialization and Adolescent Academic Grades: Teasing Out the Role of Gender

This study examined the relationship of racial and ethnic socialization and academic achievement in a sample of 218 African American adolescents (grades 9–12; 52% girls) attending a public high school in the northeastern United States. Researchers were particularly interested in whether adolescent gender moderated the relationship between racial and ethnic socialization and academic grades. Results indicated that aspects of ethnic socialization, African American cultural values and African American heritage were linked to adolescent grades. Additionally, adolescent gender was found to moderate the association between these socialization variables and grades. The findings also suggest that socialization provided by paternal caregivers around African American cultural values and African American heritage may have differential effects for academic grades than the socialization messages provided by maternal caregivers. Information generated from this study broadens the understanding of socialization factors that can facilitate positive academic outcomes in African American youth and has practical implications for parents and educators.

Defending the Realm: The Appointment of Female Defense Ministers Worldwide

Though the defense ministry has been a bastion of male power, a growing number of states have appointed women to this portfolio. What explains men's dominance over these positions? Which factors predict women's appointments? With comprehensive cross‐national data from the post–Cold War era, we develop and test three sets of hypotheses concerning women's access to the defense ministry. We show that women remain excluded when the portfolio's remit reinforces traditional beliefs about the masculinity of the position, particularly in states that are engaged in fatal disputes, governed by military dictators, and large military spenders. By contrast, female defense ministers emerge when expectations about women's role in politics have changed—that is, in states with female chief executives and parliamentarians. Women are also first appointed to the post when its meaning diverges from traditional conceptions of the portfolio, particularly in countries concerned with peacekeeping and in former military states with left‐wing governments.     

The Enduring Effects of Social Pressure: Tracking Campaign Experiments Over a Series of Elections

Recent field experiments have demonstrated the powerful effect of social pressure messages on voter turnout. This research note considers the question of whether these interventions’ effects persist over a series of subsequent elections. Tracking more than one million voters from six experimental studies, we find strong and statistically significant enduring effects one and sometimes two years after the initial communication.     

越南改革中的社会公正和民生问题及其经验探析

社会与民生问题是越南改革的重点。20多年来，越南共产党和政府在促进社会的发展、保障与改善民生方面做了大量工作，取得了很大成绩。越南改革的成功是由诸方面的原因促成的，但其中最为明显的是越南共产党对社会与民生问题所采取的正确决策和遇到困难与障碍时的合理解决。     

The Effect of Decomposition on the Efficacy of Biometrics for Positive Identification

Biometrics, unique measurable physiological and behavioral characteristics, are used to identify individuals in a variety of scenarios, including forensic investigations. However, data on the longevity of these indicators are incomplete. This study demonstrated that iris and fingerprint biometric data can be obtained up to four days postmortem in warmer seasons and 50 + days in the winter. It has been generally believed, but never studied, that iris recognition is only obtainable within the first 24 hours after death. However, this study showed that they remain viable for longer (2–34 days) depending upon the environmental conditions. Temperature, precipitation, insects, and scavenger activity were the primary factors affecting the retention of biometrics in decomposing human remains. While this study is an initial step in determining the utility of physiological biometrics across postmortem time, biometric research has the potential to make important contributions to human identification and the law enforcement, military, and medicolegal communities.