Customary Trade and the Complications of Consent

Global justice theorists have given much attention to corporations' purchases of state‐owned natural resources controlled by dictators. These resources, the common argument goes, belong to the people rather than to those who exercise effective political power. Dictators who rely on violence to secure their political power and who sell state‐owned natural resources without authorisation from their people, or from their people's elected delegates, are therefore violating their peoples' property rights. But many dictatorships also distribute natural resource revenue to the population, and stopping to purchase natural resources from them is therefore likely to produce relative deprivation for the people, even while increasing the chances of the people gaining control over their property. Given these circumstances, can corporations buying the people's natural resources from a distributive dictatorship appeal to the people's consent as justification for such purchases? I consider this question by inspecting three types of consent to which resource corporations might appeal. I show that, under the circumstances of natural resource trade with distributive dictatorships, none of these types of consent can obtain. Hence, resource corporations cannot appeal to popular consent to defend their transactions with distributive dictatorships.     

Classical fear conditioning in the anxiety disorders: a meta-analysis

Fear conditioning represents the process by which a neutral stimulus comes to evoke fear following its repeated pairing with an aversive stimulus. Although fear conditioning has long been considered a central pathogenic mechanism in anxiety disorders, studies employing lab-based conditioning paradigms provide inconsistent support for this idea. A quantitative review of 20 such studies, representing fear-learning scores for 453 anxiety patients and 455 healthy controls, was conducted to verify the aggregated result of this literature and to assess the moderating influences of study characteristics. Results point to modest increases in both acquisition of fear learning and conditioned responding during extinction among anxiety patients. Importantly, these patient-control differences are not apparent when looking at discrimination studies alone and primarily emerge from studies employing simple, single-cue paradigms where only danger cues are presented and no inhibition of fear to safety cues is required.     

Comparison of optimal cutoff points for single and multiple tests in personnel selection

This paper compares the determination of optimal cutoff points for single and multiple tests in the field of personnel selection. Decisional skills of predictor tests composing the multiple test are assumed to be endogenous variables that depend on the cutting points to be set. It is shown how the predictor cutoffs and the collective decision rule are determined dependently by maximizing the multiple test's common expected utility. Our main result specifies the condition that determines the relationship between the optimal cutoff points for single and multiple tests, given the number of predictor tests, the collective decision rule (aggregation procedure of predictor tests' recommendations) and the function relating the tests' decisional skills to the predictor cutoff points. The proposed dichotomous decision-making method is illustrated by an empirical example of selecting trainees by means of the Assessment Center method.     

Schizophrenia risk and paternal age: a potential role for de novo mutations in schizophrenia vulnerability genes

How schizophrenia (SZ) is maintained at roughly 1% of the population despite diminished reproduction is one puzzle currently facing researchers. De novo mutations were first proposed over half a century ago as a source for new SZ genes. Current evidence linking advancing paternal age to SZ risk makes revisiting this hypothesis important. Advancing paternal age is the major source of new mutations in the human population. This article will examine potential mechanisms whereby parental age may impact new mutations, as well as review recent data supporting such a hypothesis.     

Acculturation models of immigrant Soviet adolescents in Israel

This study probed acculturation in Israel of immigrant students from the former U.S.S.R. from the perception of the host society and the students. The finding from a questionnaire distributed to Israeli-born and immigrant students indicated that most but not all of the Israel-born students applied an assimilatory model while the immigrants were split between those who accepted the Israeli students and those who resisted them. Thus, ethnic relation typologies and critical sociology of education concepts can explain only part of the immigrants' attitudes. It was found that both the host society and the immigrants have different attitudes toward the culture of the other, and thus use different acculturation strategies.     

Illness perceptions or recurrence risk perceptions: What comes first? A longitudinal cross-lagged examination among cardiac patients

Objectives: Previous research suggested that illness perceptions provide the basis for illness risk perceptions through an inductive reasoning process. This study aimed to assess the direction of relationships between illness and recurrence risk perceptions over time, among cardiac patients.

Design: A longitudinal study was conducted among 138 patients undergoing coronary angioplasty. Self-report questionnaires measured perceived recurrence risk and illness perceptions one day and one month after catheterisation.

Results: Cross-lagged Panel Model Analyses revealed that higher perceptions of timeline, consequences and emotional representations of illness at hospitalisation were associated with higher recurrence risk perceptions one month later. Perceived personal control was the only illness perception with bi-directional associations: higher perceived personal control at hospitalisation was associated with higher recurrence risk perceptions one month later; and higher recurrence risk perceptions at hospitalisation was associated with lower personal control one month later.

Conclusions: The findings suggest that the associations between recurrence risk and illness perceptions can only partly be explained by inductive reasoning. Halo effects and defensive processes are suggested as complementary explanations for the observed associations between risk and illness perceptions.     

One team must win,the other need only not lose: an experimental study of an asymmetric participation game

We studied asymmetric competition between two (three‐person) groups. Each group member received an initial endowment and had to decide whether or not to contribute it. The group with more contributions won the competition and each of its members received a reward. The members of the losing group received nothing. The asymmetry was created by randomly and publicly selecting one group beforehand to be the winning group in the case of a tie. A theoretical analysis of this asymmetric game generates two qualitatively different solutions, one in which members of the group that wins in the case of a tie are somewhat more likely to contribute than members of the group that loses, and another in which members of the group that loses in the case of a tie are much more likely to contribute than members of the group that wins. The experimental results are clearly in line with the first solution. Copyright © 2005 John Wiley & Sons, Ltd.     

Age-Related Differences in the Transition from Adolescence to Adulthood and Links with Family Relationships

This study examined differences on major aspects of attaining adult status in the transition from adolescence into young adulthood. The attainment of developmental tasks and the quality of parent–child relationships were compared across adolescence and young adulthood. In addition, the extent to which relationships with parents are related to the attainment of young adulthood developmental tasks was also investigated. The study was conducted on 169 Israeli adolescents, early young adults, and late young adults. Results showed that developmental tasks are attained at different stages, and that the consolidation of adult status is achieved closer to the end of the third decade of life. Relationships with parents were found to be more positive following the transition from adolescence to early young adulthood. Adaptation of young adults was explained by the quality of relationships with parents and especially with fathers.