Y chromosome microsatellite genetic variation in two Native American populations from Argentina: Population stratification and mutation data

Two Native American populations from North and northwest regions of Argentina (Toba and Colla) were analyzed for 17 Y chromosome short tandem repeat loci (Y-STRs), namely, DYS19, DYS389I, DYS389II, DYS390, DYS391, DYS392, DYS393, DYS385, DYS437, DYS438, DYS439, DYS448, DYS456, DYS458, DYS635 and GATA H4.1. Over 357 allele transfers, two one-step mutations could be detected at DYS456 and GATA H4.1 loci. A new 16.1 ‘micro-variant’ allele was observed for DYS385, characterized by an insertion at the fifth GAAA repeat. We also observed two alleles at the DYS448 locus in three samples (two from Toba and one from Colla). A total of 34 and 16 different haplotypes were detected for Toba and Colla, respectively, the former with a haplotype diversity value of 0.9769 ± 0.01, whereas 0.9497 ± 0.02 for the latter. Significant population differences were observed between Colla and Toba, at least in part, due to a more prevalent European input in the Colla. In agreement with this observation is the fact that the genetic distances between Colla and Iberian populations are lower than those observed between Iberian and any other Native American population. The results of multiscaling dimensional analysis and genetic distances (Rst) among Native American population samples also reflect this fact. The data show the existence of clear population stratification in the Argentina, a fact that should be taken into account in forensic casework.     

The sexual objectification of girls and aggression towards them in gang and non-gang affiliated youth

Sexual objectification is related to various negative attitudes and outcomes, including rape proclivity and reduced moral concern for the objectified, which suggests that objectification has implications for aggression. Our study examined the relationship between objectification and general aggressive behaviour in adolescents, including gang-affiliated youth. We hypothesized that (1) objectification would correlate with aggression towards girls, (2) gang affiliation would correlate with objectification and aggression towards girls, and (3) objectification and gang affiliation would interact such that strongly affiliated participants who objectified girls would be most aggressive towards them. We also hypothesized that sexual objectification would be a significant predictor of aggression above and beyond other factors, such as trait aggression. As predicted, objectification correlated with aggression towards girls and with gang affiliation, which also correlated with aggression. In addition, objectification predicted aggression towards girls, after controlling for other relevant factors. Further, we found an objectification?×?gang affiliation interaction, which differed from our original predictions. Among participants low in gang affiliation, objectification of girls predicted levels of aggression towards them. Among those high in gang affiliation, however, objectification did not predict aggression. We discussed the implications of our findings for general aggression.     

Varieties of vigilantism: conceptual discord,meaning and strategies

The practice of vigilantism raises a number of broader provocative questions regarding state–society relations. But before pursuing these questions, we must first ask a critical conceptual question: what is vigilantism? In this article, I offer a conceptual analysis of vigilantism to identify and analyse the points of conceptual discord that make vigilantism an essentially contested concept. To address these challenges, I establish the concept’s core definitional dimensions and range of attributes. I then develop a root concept of vigilantism as the collective use or threat of extra-legal violence in response to an alleged criminal act. The root concept better positions researchers to effectively utilise different strategies to amend the concept for varying theoretical and empirical ends, avoid analytical pitfalls that beset existing conceptualisations and pursue promising new research questions.     

Using an evolutionary perspective to understand the relationship between physical aggression and academic performance in late adolescents

In this study, we applied an evolutionary perspective to analyze the relationship between aggressiveness, academic performance, and sociality in a population of 528 adolescents of both sexes. In men, we expect physical aggression (PA) and sociality to be negative predictors of academic performance. However, in women, PA would be a negative predictor of academic performance, and sociality a positive one. Our results report a negative association between academic performance and PA in both sexes. As we expected, social effect derived from the use of PA seems to be different for each sex, where men could display a rebellious attitude to increase chances of finding a mate. In contrast, results for women are not conclusive, because no relationship between academic performance and any aggressive mechanism, were predicted by sociality. We conclude that an evolutionary framework, which includes sex-specific hypotheses, is appropriate to obtain a holistic perspective of this phenomenon.     

Support for Harsh Criminal Sanctions and Criminal Justice Beliefs: A Social Dominance Perspective

Much of the criminal justice literature indicates that people’s support for harsh criminal sanctions such as the death penalty is strongly related to their beliefs about deterrence and their beliefs about retribution. In this paper, using social dominance theory as our organizing framework, we expand upon this literature by showing that social dominance orientation (SDO) is also related to support for harsh criminal sanctions, as well as to deterrence and retribution beliefs. In addition, we show that the relationships between SDO, on the one hand, and support for various forms of severe criminal sanctions, on the other, are mediated by deterrence and retribution beliefs.

Postmortem vitreous humor beta-hydroxybutyrate: its utility for the postmortem interpretation of diabetes mellitus

Ketoacidotic coma is one of the most serious complications arising from diabetes mellitus, especially type I, and may be the cause of sudden death especially in diabetes type I. Since beta-hydroxybutyrate (beta-OHB) serum concentrations might provide more information on the severity of ketoacidosis, the aim of this study was to evaluate the concentrations of beta-OHB in vitreous humor and its correlation with other biochemical parameters during postmortem examination. We intended to ascertain the sensitivity and the specificity of these markers for diagnosing diabetes mellitus and the presence of ketoacidosis. This study involved 453 cadavers with a mean age of 57.6 years (S.D. 20.7) and a mean postmortem interval of 17.8 h (S.D. 9.6, range 2-61 h). Cases were assigned to two diagnostic groups according to the antemortem diagnosis of diabetes mellitus, based on the patients' medical records. In vitreous humor statistically significant differences were found in biochemical marker concentrations between the two diagnostic groups, the highest values being obtained in the group of subjects with a previous diagnosis of diabetes mellitus. The measurement of beta-OHB in vitreous humor may be a useful alternative to using blood during postmortem analysis. The presence of high levels of beta-OHB may help interpret the cause of death in diabetics when the autopsy result is negative.     

Technology Competitiveness in Emerging Markets: The Case of the Brazilian Polymer Industry

The Brazilian polymer industry (plastics, rubbers, fibers, adhesives, paints, and varnishes) is the fastest growing segment of the Petrochemical Chain. Since the polymer industry is characterized as science based, the capacity to create technology is vital for its long-range survival in the market. This paper analyzes how Brazilian polymer firms maintain their technological competitiveness, explains the main modes of technology transfer, and evaluates the degree of technological dependence of this industry. The methodology consisted of a database built with data from the Brazilian Patent Office. To confirm the findings, interviews were conducted with staff members from seven Brazilian polymer firms. The data base analysis and the interviews reveal that, in spite of the fact that Research and Development (R&D) and technological innovation have a fundamental role in their competitiveness, the firms are technologically dependent upon foreign suppliers.     

Institutional Context, Cognitive Resources and Party Attachments Across Democracies

e-mail: jdh39{at}columbia.edu e-mail: gck2001{at}columbia.edu e-mail: ell2002{at}columbia.edu This paper develops and tests arguments about how national-levelsocial and institutional factors shape the propensity of individualsto form attachments to political parties. Our tests employ atwo-step estimation procedure that has attractive propertieswhen there is a binary dependent variable in the first stageand when the number of second-level units is relatively small.We find that voters are most likely to form party attachmentswhen group identities are salient and complimentary. We alsofind that institutions that assist voters in retrospectivelyevaluating parties—specifically, strong party disciplineand few parties in government—increase partisanship. Theseinstitutions matter most for those individuals with the fewestcognitive resources, measured here by education.