Nine-locus Y-chromosome STR profiling of Caucasian and Xhosa populations from Cape Town, South Africa

Y-chromosome STR markers are not widely used in forensic case work in South Africa. To begin assessing the forensic value of these markers in South Africa, samples were collected from 100 English-speaking Caucasian males and 99 Xhosa males, living in the Cape Town metropolitan area. Allele and haplotype frequencies were determined for nine Y-chromosome STR loci (DYS19, DYS389-I, DYS389-II, DYS390, DYS391, DYS392, DYS393, and the duplicated locus DYS385). Unique haplotypes were obtained for 47 Xhosa males and 66 Caucasians.     

Reference Dependence in Political Primaries

This research considers how reference dependence impacts choice in a primary election. The normative advice is to weigh personal political preference against the greater ability of a more electable candidate to win the later general election. Here a behavioral view of primary elections is developed by adding reference dependence to a Hotelling model of political competition. The model details the impact of references on voter choice and generates recommendations as to the reference marketers for any candidate would like primary voters to employ. The advice to a more electable, that is, moderate, candidate is to encourage voters to compare the primary candidates to the extremes of the opposite party. A less electable candidate should encourage voters to compare the candidates to positions within their own party.     

Profiling the Victims: public awareness of pollution-related harm in China

This article aims to identify factors which influence public awareness of health or economic harm from pollution in China. Based on an analysis of the China General Social Survey (CGSS) carried out nationwide by Renmin University and HKUST in 2006, it focuses on self-identification as a pollution victim. The analysis tests three groups of hypotheses about how self-identified victims differ from others: first, in terms of the environmental conditions they experience, such as the actual level of pollution and types of neighbourhoods they inhabit; second, in terms of resources, including material and information resources, time, social capital and political experience; and third, in terms of political attitudes. The conclusion discusses implications for the politics of public participation in environmental governance in China.     

Public Preferences for Bipartisanship in the Policymaking Process

At a time of a high level of polarization in Congress, public opinion surveys routinely find that Americans want politicians to compromise. When evaluating legislation, does the preference for bipartisanship in the legislative process trump partisan identities? We find that it does not. We conduct two experiments in which we alter aspects of the political context to see how people respond to parties (not) coming together to achieve broadly popular public policy goals. Although citizens can recognize bipartisan processes, preferences for bipartisan legislating do not outweigh partisan desires in the evaluation of public policies.     

Dual-Factor Mental Health from Childhood to Early Adolescence and Associated Factors: A Latent Transition Analysis

Journal of Youth and Adolescence - The dual-factor model of mental health indicates the importance of simultaneously assessing symptoms and subjective wellbeing, but there is limited understanding...     

Economic Explanations for Opposition to Immigration: Distinguishing between Prevalence and Conditional Impact

What explains variation in individuals’ opposition to immigration? While scholars have consistently shown cultural concerns to be strong predictors of opposition, findings regarding the labor‐market competition hypothesis are highly contested. To help understand these divergent results, we distinguish between the prevalence and conditional impact of determinants of immigration attitudes. Leveraging a targeted sampling strategy of high‐technology counties, we conduct a study of Americans’ attitudes toward H‐1B visas. The plurality of these visas are occupied by Indian immigrants, who are skilled but ethnically distinct, enabling us to measure a specific skill set (high technology) that is threatened by a particular type of immigrant (H‐1B visa holders). Unlike recent aggregate studies, our targeted approach reveals that the conditional impact of the relationship in the high‐technology sector between economic threat and immigration attitudes is sizable. However, labor‐market competition is not a prevalent source of threat and therefore is generally not detected in aggregate analyses.     

Comment on David Listokin,Barbara Listokin,and Michael Lahr's “The contributions of historic preservation to housing and economic development”: Historic preservation in a neoliberal age

Abstract

Listokin, Listokin, and Lahr argue that historic preservation can function as a community development tool, but there are numerous deficiencies inherent in this method that make it a less‐than‐desirable way to revitalize. Historic preservation generally leads to gentrification that in turn displaces many low‐income households. The historic rehabilitation tax credit also represents a circuitous means of providing affordable housing that would be more effectively delivered through direct subsidy.     

Failing to Yield? Ploughs,Conservation Agriculture and the Problem of Agricultural Intensification: An Example from the Zambezi Valley,Zimbabwe

Agricultural intensification, or increasing yield, has been a persistent theme in policy interventions in African smallholder agriculture. This article focuses on two hegemonic policy models of such intensification: (1) the ‘Alvord model’ of plough-based, integrated crop-livestock farming promoted in colonial Zimbabwe; and (2) minimum-tillage mulch-based, Conservation Agriculture, as currently preached by a wide range of international agricultural research and development agencies. An analysis of smallholder farming practices in Zimbabwe's Zambezi Valley, reveals the limited inherent understanding of farmer practices in these models. It shows why many smallholder farmers in southern Africa are predisposed towards extensification rather than intensification, and suggests that widespread Conservation Agriculture adoption is unlikely.     

Do Term Limits Restrain State Fiscal Policy? Approaches for Causal Inference in Assessing the Effects of Legislative Institutions

Scholars of state politics are often interested in the causal effects of legislative institutions on policy outcomes. For example, during the 1990s a number of states adopted term limits for state legislators. Advocates of term limits argued that this institutional reform would alter state policy in a number of ways, including limiting state expenditures. We highlight a number of research design issues that complicate attempts to estimate the effect of institutions on state outcomes by addressing the question of term limits and spending. In particular, we focus on (1) treatment effect heterogeneity and (2) the suitability of nonterm‐limit states as good counterfactuals for term‐limit states. We compare two different identification strategies to deal with these issues: differences‐in‐differences (DID) estimation and conditioning on prior outcomes with an emphasis on synthetic case control. Using more rigorous methods of causal inference, we find little evidence that term limits affect state spending. Our analysis and results are informative for researchers seeking to assess the causal effects of state‐level institutions.