Retrospective Voting and Political Representation

This article develops a theoretical model of political representation under the single-member district system. I establish the existence of equilibria in which legislative voting of each legislator depends only on her preference and her electorate's preference and voters sanction badly behaved incumbents and retain well-behaved ones based solely on their own representatives' roll-call records. In equilibrium, voters achieve a partial representation with respect to representatives' behavior in each district. However, with respect to representation of the social majority, my findings are indeterminate. On the one hand, there exists an equilibrium in which the majority-preferred alternative is the outcome guaranteed, except in very special circumstances. On the other hand, this equilibrium is not generally the unique equilibrium, and, for some parameter values, there is an equilibrium in which the majority-preferred alternative is less likely than the alternative preferred only by the minority to be the outcome.     

Measurement and analysis of diastereomer ratios for forensic characterization of brodifacoum

The highly toxic anticoagulant rodenticide brodifacoum is an organic compound that has two diastereomeric forms. In this paper, we consider the hypothesis that the relative population of the diastereomers is a characteristic of forensic value for the association or source attribution of specimens of brodifacoum. In general, the stereoisomer distribution in an organic compound depends on the reagents, conditions, and methods used for synthesis and purification, and may vary over time due to differential stabilities of the stereoisomers. The stereoisomer distribution may thus serve as an identifier of the production methods and history of samples and provide a basis for comparing recovered specimens. We refer to this novel approach for signature detection as stereoisomer distribution analysis or SDA. If the stereoisomers are diastereomers, quantitative determination of the diastereomer ratio in a specimen can be performed by a number of techniques, notably gas or liquid chromatography or nuclear magnetic resonance (NMR) spectroscopy. This paper describes an NMR spectroscopic analysis of ten commercial technical grade brodifacoum samples from distinct batches originating from three different sources. The results reveal detectable source-to-source and batch-to-batch variations in diastereomer ratios.     

Intimate Partner Violence among Asian Americans: Risk Factor Differences across Ethnic Subgroups

A limited number of studies have been conducted on intimate partner violence (IPV) among Asian Americans. This study aims to fill this gap by examining risk factors for IPV and ethnic differences within Asian American subgroups. Logistic regression analyses were conducted, using data from the National Latino and Asian American Study (NLAAS). This study found that while prevalence rates of IPV varied across ethnic groups, the differences disappeared when controlling for demographic, interpersonal, and sociocultural variables. The study findings also showed that risk for IPV was higher for US-born Asian Americans, and that perceived discrimination increased the risk.     

Standardized assessment of substance-related, other psychiatric, and comorbid disorders among probationers

This study examined the prevalence of alcohol- and substance-related disorders in a random sample of 627 adult probationers in Illinois. The investigation also explored the prevalence of major psychiatric disorders and their co-occurrences with alcohol and substance use disorders. To detect the presence of psychiatric disorders, researchers employed standardized assessment tools based on Diagnostic and Statistical Manual of Mental Disorders criteria. Overall, results showed that probationers had significantly higher rates of psychiatric disorders, substance use disorders, and co-occurring disorders compared with persons in the general population. In light of these findings, probation administrators are urged to invest more resources in treating drug use, mental illness, and codisorders, the latter of which is associated with a higher risk of violent behaviors.     

Population genetics of nine STR loci: TH01, TPOX, CSF1PO, vWA, FESFPS, F13A01, D13S317, D7S820 and D16S539 in a Korean population

Allele frequencies for nine STR loci namely, TH01, TPOX, CSF1PO, vWA, FESFPS, F13A01, D13S317, D7S820 and D16S539 were obtained from a sample of 437 unrelated individuals living in Chungcheong-do, South Korea.     

Single fiber analysis by internal reflection infrared microspectroscopy.

Attenuated total reflection (ATR) is a convenient mode for single fiber analysis by infrared microspectroscopy, particularly when transmission spectra are difficult to obtain or when surface preferenced sampling is desirable. Textile finishes such as spin finishes, anti-static finishes, and permanent press finishes are revealed by ATR techniques. Bicomponent fibers may be analyzed by a combination of ATR techniques, transmission techniques, and spectral subtraction.     

Contagion Effects and Ethnic Contribution Networks

Many political behavior theories explicitly incorporate the idea that context matters in politics. Nonetheless, the concept of spatial dependence—in particular, that behavior in geographic units is somehow related to and affected by behavior in neighboring areas—is not extensively explored. The study of campaign finance is no exception. Research in this area concentrates on the attributes of the individual donor, leaving context underexplored. Concepts such as contribution networks, for instance, are not rigorously tested. This article reexamines the impact of conventional socio-demographic covariates on campaign donation behavior by ethnic contributors and explicitly models spatial effects. The spatial analysis reveals that patterns of campaign donations are geographically clustered (exhibiting both spatial dependence, implying a neighborhood effect, and spatial heterogeneity, implying a regional effect), and that this clustering cannot be explained completely by socioeconomic and demographic variables. While socio-demographic characteristics are important components of the dynamic underlying campaign contributions, there is also evidence consistent with a contagion effect whereby ethnic contribution networks are fueling funds to candidate coffers.     

A comparison of prospective and retrospective voting with heterogeneous politicians

A long-standing empirical literature has been concerned with determining whether voters vote “prospectively or “retrospectively.” Despite this interest, little is known about the consequences of one voting regime versus another. This study addresses this deficiency. We find that voter welfare can be greatly affected by the candidate selection technique employed by voters. Among other findings, we show that “electing the best candidate” does not always maximize voter welfare. Furthermore, “myopic” voting is sometimes superior to “farsighted” voting. These findings have implications for interpretations of empirical studies of voter behavior.