Twelve short tandem repeat loci Y chromosome haplotypes: genetic analysis on populations residing in North America

A total of 2443 male individuals, previously typed for the 13 CODIS STR loci, distributed across the five North American population groups African American, Asian, Caucasian, Hispanic, and Native American were typed for the Y-STR loci DYS19, DYS385a/b, DYS389I/II, DYS390, DYS391, DYS392, DYS393, DYS437, DYS438 and DYS439 using the PowerPlex Y System. All population samples were highly polymorphic for the 12 Y-STR loci with the marker DYS385a/b being the most polymorphic across all sample populations. The Native American population groups demonstrated the lowest genetic diversity, most notably at the DYS393 and DYS437 loci. Almost all of the 12-locus haplotypes observed in the sample populations were represented only once in the database. Haplotype diversities were greater than 99.6% for the African Americans, Caucasians, Hispanics, and Asians. The Native Americans had the lowest haplotype diversities (Apaches, 97.0%; Navajo, 98.1%). Population substructure effects were greater for Y-haplotypes, compared with that for the autosomal loci. For the apportionment of variance for the 12 Y-STRs, the within sample population variation was the largest component (>98% for each major population group and approximately 97% in Native Americans), and the variance component contributed by the major population groups was less than the individual component, but much greater than among sample populations within a major group (11.79% versus 1.02% for African Americans/Caucasians/Hispanics and 15.35% versus 1.25% for all five major populations). When each major population is analyzed individually, the R(ST) values were low but showed significant among group heterogeneity. In 692 confirmed father-son pairs, 14 mutation events were observed with the average rate of 1.57x10(-3)/locus/generation (a 95% confidence bound of 0.83x10(-3) to 2.69x10(-3)). Since the Y-STR loci reside on the non-recombining region of the Y chromosome, the counting method is one approach suggested for conveying an estimate of the rarity of the Y-haplotype. Because the Y-STR loci are not all in disequilibrium to the same extent, the counting method is a very conservative approach. The data also support that autosomal STR frequencies can be multiplied by the upper bound frequency estimate of a Y-haplotype in the individual population group or those pooled into major population groups (i.e., Caucasian, African American, Hispanic, and Asian). These analyses support use of the haplotype population data for estimating Y-STR profile frequencies for populations residing in North America.     

Challenges to the Recruitment and Retention of Volunteers in Traditional Nonprofit Organizations: A Case Study of Australian Meals on Wheels

Australian Meals on Wheels (MoWs) is a well-known, traditional nonprofit organization operating for over 60 years in a mixed economy of welfare, where it is positioned between the increasingly complex demands of state regulation and market efficiency. These contextual challenges cause critical tensions to an organization reliant on humanitarian principles and a large volunteer workforce. Findings show that this organization is experiencing conflicting and multiple identities which are having a significant impact on volunteer recruitment and retention. Specifically, data highlight the external challenges that threaten volunteers relating to regulation and funding, and internal challenges that tend to ignore volunteer value and instead picture volunteers as ageing and resistant to change. Findings suggest that the organization needs to work with all stakeholders to develop a shared organizational identity that blends humanitarianism with managerialism. New inclusive processes can enable better recruitment and retention practices, enabling the organization to “unfreeze” its traditional ways of operating to build a sustainable future for this much-needed organization.     

Layoffs in China's City of Textiles: Adaptation to Change

Urban poverty among laid-off workers has become one of the major challenges confronting China due to the massive retrenchment of state employees since the 1990s. While a great deal of research has focused on the general situation or the analysis of aggregate-level data, the workers themselves have been given much less attention. Based on data from Shaanxi Province, this paper examines the current status of the former state workers and their families in the once-prosperous “City of Textiles,” a district of state-owned textile mills and affiliated residential areas where the risk of slum development and marginalisation of former state workers has increased since economic reform. These textile workers had devoted themselves to hard work, acted as communist zealots and performed family duties at the same time, believing that the government would take care of their families. However, the poverty induced by the layoff programme has not only altered their lives and deteriorated intra-family relationships, but has also pushed some laid-off workers into various illegal activities to maintain household finances and to pay for rapidly rising tuition fees and medical expenses. We contest the commonly held view that poverty faced by former state workers is of their own making and show that current government anti-poverty strategies are inadequate to deal with the problem.     

Book reviews

Ephraim Maisel, The Foreign Office and Foreign Policy 1991–1926 (Brighton: Sussex Academic Press 1994), £35. ISBN 1–898723–04–4.

Timothy P. Maga, The World of Jimmy Carter: U.S. Foreign Policy 1977–1981 (West Haven, CT: University of New Haven Press, 1994). 189 pp. ISBN 0–936385–23–0.

Michael Leifer, Dictionary of the Modern Politics of South‐East Asia (London and New York: Routledge, 1995), xii + 271pp. £45. ISBN 0–415–04219–4.

Christopher C. Harmon and David Tucker (eds.), Statecraft and Power: Essays in Honor of Harold W. Rood (Lanham and London: University Press of America with the National Institute for Public Policy, 1994), 284pp ISBN 0–8191–8718–6.     

Providing eyewitnesses with initial retrieval support: what works at immediate and subsequent recall?

The effect of retrieval support on eyewitness recall was investigated in two experiments. Based on the outshining hypothesis, Experiment 1 tested whether retrieval support enhances witness performance (compared to free recall) especially when witnessing conditions are suboptimal (e.g., because witnesses were distracted during the crime). Eighty-eight participants watched a videotaped crime with either full or divided attention and subsequently received retrieval support with the Self-Administered Interview© (SAI) or completed a free recall (FR). One week later (Time 2 – T2) all participants completed a second FR. Unexpectedly, retrieval support did not lead to better memory performance than FR under divided attention conditions, suggesting that retrieval support is not effective to overcome adverse effects of divided attention. Moreover, presence of retrieval support at Time 1 (T1) had no effect on memory performance at T2. Experiment 2 (N = 81) tested the hypothesis that these T2-results were due to a reporting issue undermining the memory-preserving effect of T1-retrieval support by manipulating retrieval support (SAI vs. FR) at T1 and T2. As expected, T1-retrieval support led to increased accuracy at T2. Thus, the beneficial value of T1-retrieval support seems greatest with high-quality T2-interviews. Interviewers should consider this when planning a subsequent interview.     

Post-decision confidence,decision time,and self-reported decision processes as postdictors of identification accuracy

Abstract

Post-decision confidence, decision time, and decision processes were evaluated concerning their usefulness for postdicting identification accuracy. One hundred and ninety-two participants witnessed a filmed theft and were tested with target-absent or target-present simultaneous lineups 1 week later. Post-decision confidence was positively associated with, and decision time negatively associated with choosers’ identification accuracy. For several measures of self-reported decision processes, the expected associations were non-significant. Using a decision rule including highly confident and fast participants led to more correct classifications than either variable alone. Significant associations between postdictors highlight the need to consider the different processes jointly as, in combination, they may be more useful in assessing identification decisions.     

Eyewitness identification procedures for multiple perpetrator crimes: a survey of police in Sweden,Belgium, and the Netherlands

ABSTRACT

A considerable proportion of crimes involve multiple perpetrators. Yet, little is known about how police officers construct, administer, and record eyewitness identification procedures for multiple suspects. An online survey of law enforcement agents in Sweden, Belgium, and the Netherlands (N?=?51) was conducted to obtain an initial understanding of police perceptions of prevalence and characteristics of multiple perpetrator crimes, and to examine identification procedure practices given the little to no guidance provided for police. Practice converged when it came to the use of sequential, photographic lineups, but diverged between and within countries on whether or not suspects of multiple perpetrator crimes should be placed in separate lineups. Results specifically highlight contextual cuing as one critical area for future research in identification for multiple perpetrator crimes (i.e. placing multiple suspects in the same lineup or asking eyewitnesses to look for a specific suspect).     

Rural�CUrban Migration and Experience of Childhood Abuse in the Young Thai Population

Evidence suggests that certain migrant populations are at increased risk of abusive behaviors. It is unclear whether this may also apply to Thai rural-urban migrants, who may experience higher levels of psychosocial adversities than the population at large. The study aims to examine the association between migration status and the history of childhood sexual, physical, and emotional abuse among young Thai people in an urban community. A population-based cross-sectional survey was conducted in Northern Bangkok on a representative sample of 1052 young residents, aged 16-25?years. Data were obtained concerning: 1) exposures-migration (defined as an occasion when a young person, born in a more rural area moves for the first time into Greater Bangkok) and age at migration. 2) outcomes-child abuse experiences were assessed with an anonymous self report adapted from the Conflict Tactics Scales (CTS). There were 8.4%. 16.6% and 56.0% reporting sexual, physical, and emotional abuse, respectively. Forty six percent of adolescents had migrated from rural areas to Bangkok, mostly independently at the age of 15 or after to seek work. Although there were trends towards higher prevalences of the three categories of abuse among early migrants, who moved to Bangkok before the age of 15, being early migrants was independently associated with experiences of physical abuse (OR 1.9 95%CI 1.1-3.2) and emotional abuse (OR 2.0, 95%CI 1.3-3.0) only. Our results suggest that rural-urban migration at an early age may place children at higher risk of physical and emotional abuse. This may have policy implications for the prevention of childhood abuse particularly among young people on the move.