The Subjective Happiness Scale: Translation and Preliminary Psychometric Evaluation of a Spanish Version

The aim of the present study was to investigate the psychometric properties of the Spanish version of the Subjective Happiness Scale (Lyubomirsky and Lepper in Soc Indic Res 46:137–155, 1999) in a wide sample of 1,155 participants (448 men, 707 women) from three different groups (high school students, college students, and community adult participants). The participants completed the following measures: the Spanish version of SHS, the Satisfaction with Life Scale, the Beck Depression Inventory and the Spielberger Trait Anxiety Inventory. The results revealed preliminary evidence of adequate internal consistency, appropriate test–retest reliability and convergent validity for research purposes. Also, results from confirmatory factor analyses showed a clear one-factor structure, identical with the English version. No significant sex effects were evidenced, although differences between the high school student group and the undergraduate university group were found. In general, our findings add empirical evidence of the usefulness of such a brief measure for the assessment of subjective happiness in large-scale national and international studies with native Spanish-speaking populations. Finally, practical recommendations and future lines of research are suggested.     

Are the closed landfills recovered habitats for small rodents? A case study in a riparian site,Buenos Aires,Argentina

The establishment of landfills in urban areas leads to extensive disturbances. Their development after landfill closure depends on the characteristics of the soil cover, the surrounding communities and the dispersal of plants and animals. This study was carried out in a landfill closed in 2004, surrounded by an urban area, freshwater marshes and a riparian forest. The aim of this study was to determine the role that the closed landfill may play in maintaining rodent communities typical of this zone and its relation to characteristics of the sites. Four rodent and plant samplings were carried out from December 2005 to September 2006 at five sites inside the landfill: three filled cells and two areas of the riparian margin. We recorded a total of 433 individual rodents. The rodent community of the closed landfill included species typical of rural, riparian and rural habitats: Akodon azarae (358), Oligoryzomys flavescens (32), Deltamys kempi (14), Rattus rattus (14), Cavia aperea (11) and Scapteromys aquaticus (4). Rodent species composition varied among sites, but A. azarae was usually the dominant species. We found a rich rodent community mostly composed of wild species. The relictual riparian margin may have served as a major refuge for native rodent community while the landfill was in operation, and after closure it possibly acted as a source for some species to colonize the covered cells.     

SYSTEMIC AND IDIOSYNCRATIC SOVEREIGN DEBT CRISES

The theoretical literature on sovereign defaults has focused on adverse shocks to debtors' economies, suggesting that defaults are of an idiosyncratic nature. Still, sovereign debt crises are also of a systemic nature, clustered around panics in the financial center, such as the European Sovereign Debt Crisis in the aftermath of the US Subprime Crisis in 2008. Crises in the financial centers are rare disasters and, thus, their effects on the periphery can only be captured by examining long episodes. In this paper, we examine sovereign defaults from 1820 to the Great Depression, with a focus on Latin America. We find that 63% of the crises are of a systemic nature. These crises are different. Both the international collapse of liquidity and the growth slowdown in the financial centers are at their core. These global shocks trigger longer default spells and larger losses for investors.     

Social Movements and Patronage Politics: Processes of Demobilization and Dual Pressure

Why might social movements be highly contentious at one point in time and demobilize shortly after? Based on ethnographic fieldwork, this article examines the dynamics of demobilization of popular movements in a context of patronage politics. I argue that demobilization in these contexts results from relational processes creating a “dual pressure” stemming “from below” and “from above.” In social environments where patronage is pervasive, poor people develop survival strategies relying on clientelistic arrangements. They participate in a social movement organization (SMO) to voice their rights, but also to address pressing survival needs by gaining access to resources. These expectations of constituents create a pressure “from below” on leaders of an SMO, which respond by securing resources obtained through alliances with national political actors. In turn, these alliances create a pressure “from above,” because local leaders reciprocate this national support by eschewing the organization of collective actions. Drawing on data culled from 12 months of fieldwork on an Argentine peasant movement, this article inspects the interconnections between popular movements and patronage politics to refine our understanding of demobilization processes; contribute to discussions regarding the role of culture on contentious politics; and shed light on current demobilization trends in Latin America.     

Area under the ROC curve comparison in the presence of missing data

The area under the receiver operating characteristic (ROC) curve (AUC) is broadly accepted and often used as a diagnostic accuracy index. Moreover, the equality among the predictive capacity of two or more diagnostic systems is frequently checked from the comparison of their respective AUCs. In paired designs, this comparison is usually performed by using only the subjects who have collected all the necessary information, in the so-called available-case analysis. On the other hand, the presence of missing data is a frequent problem, especially in retrospective and observational studies. The loss of statistical power and the misuse of the available information (with the resulting ethical implications) are the main consequences. In this paper a non-parametric method is developed to exploit all available information. In order to approximate the distribution for the proposed statistic, the asymptotic distribution is computed and two different resampling plans are studied. In addition, the methodology is applied to a real-world medical problem. Finally, some technical issues are also reported in the Appendix.     

Segmentation in Low-Penetration and Low-Involvement Categories: An Application to Lottery Games

Market segmentation is accepted as a fundamental concept in marketing and several authors have recently proposed a segmentation model where personal and environmental variables intersect with each other to form motivating conditions that drive behavior and preferences. This model of segmentation has been applied to packaged goods. This paper extends this literature by proposing a segmentation model for low-penetration and low involvement (LP-LI) products. An application to the lottery games in Chile supports the proposed model. The results of the study show that in this type of products (LP-LI), the attitude towards the product category is the most important factor that distinguishes consumers from non consumers, and heavy users from light users, and consequently, a critical segmentation variable. In addition, a cluster analysis shows the existence of three segments: (1) the impulsive dreamers, who believe in chance, and in that lottery games can change their life, (2) the skeptical, that do not believe in chance, nor in that lottery games can change their life and (3) the willing, who value the benefits of playing.