A Sarmanov family with beta and gamma marginal distributions: an application to the Bayes premium in a collective risk model

In this paper we firstly develop a Sarmanov–Lee bivariate family of distributions with the beta and gamma as marginal distributions. We obtain the linear correlation coefficient showing that, although it is not a strong family of correlation, it can be greater than the value of this coefficient in the Farlie–Gumbel–Morgenstern family. We also determine other measures for this family: the coefficient of median concordance and the relative entropy, which are analyzed by comparison with the case of independence. Secondly, we consider the problem of premium calculation in a Poisson–Lindley and exponential collective risk model, where the Sarmanov–Lee family is used as a structure function. We determine the collective and Bayes premiums whose values are analyzed when independence and dependence between the risk profiles are considered, obtaining that notable variations in premiums values are obtained even when low levels of correlation are considered.     

Student-t censored regression model: properties and inference

In statistical analysis, particularly in econometrics, it is usual to consider regression models where the dependent variable is censored (limited). In particular, a censoring scheme to the left of zero is considered here. In this article, an extension of the classical normal censored model is developed by considering independent disturbances with identical Student-t distribution. In the context of maximum likelihood estimation, an expression for the expected information matrix is provided, and an efficient EM-type algorithm for the estimation of the model parameters is developed. In order to know what type of variables affect the income of housewives, the results and methods are applied to a real data set. A brief review on the normal censored regression model or Tobit model is also presented.     

Competitive Strategies and Firm Performance: a Comparative Analysis of Pure,Hybrid and ‘Stuck‐in‐the‐middle’ Strategies in Spanish Firms

The purpose of this study was to examine the viability of hybrid competitive strategies, which combine differentiation and cost elements, and their impact on organizational performance in comparison to pure strategies and ‘stuck‐in‐the‐middle’ combinations. Previous studies have focused above all on US data. The analysis carried out in this paper has centred on a multisectorial sample of 164 Spanish firms. The findings show that a large number of the organizations use different types of hybrid strategies and also that such strategies tend to be associated with higher levels of firm performance, particularly those strategies which place emphasis on a greater number of strategic dimensions, and specifically on innovation differentiation.     

A social policy model for the reconciliation of employment and family life from a gender equality perspective

The issue of family–employment reconciliation has rapidly evolved from being ignored to a certain dejá vu perception in public debate, as a result of its media success during the last decade. This is even more the case in Spain, where it was only in the late 1990s, when a law was passed to regulate and extend parental and other leave for workers with close relatives in need of care, that reconciliation policies began to be generally discussed and considered. In a context of quick population aging as a consequence of low fertility, concern on labor force supply in the middle term is high on the agenda. Women are increasingly considered to be necessary both as workers and mothers (of future workers), thus raising awareness of the importance of social policies to make their double presence in both worlds possible. There is now general agreement from the right to the left on the urgency to develop family–employment policies. But what is not generally addressed is the impact of such policies on gender equality, a dimension which tends to be either ignored or taken for granted. Not all reconciliation measures have the same effects on the women and men relationship. Some of them push forward equality, whereas others go backwards. Efficiency in making job and family responsibilities compatible does not always go hand in hand with increasing equality. The paper presents a theoretical model for the reconciliation of work and family life from a gender equality perspective. The three main kinds of instruments available in social policy – services, leave, and cash – are examined in four different cases: care of under-threes, care of sick children, coordination of work and school schedules, and care of children during school holidays. Each case is looked at considering its effects on social and gender equality, as well as child welfare. The model includes as active agents of the system the State (promotes and regulates), families and individuals (those directly implicated), and the market as labor market, on the one hand, and supplier of private services, on the other.     

Long-Term Care for Elder Women in Spain: Advances and Limitations

In Spain, elder women are the largest group in need of long-term care. Significant improvements in this issue took place between 2007 and 2011, thanks to the Dependency Law (2006). But severe limitations showed the difficulty of overcoming the historical backwardness of Spanish social policy. This article describes the situation of Spanish people with dependency in activities of daily living. It analyzes changes driven by this law, especially in their impacts on elder women. It assesses the extent to which those changes can alter the traditional model of care. There are three major findings: First, measures promoted by the law have improved the previous situation but are incapable of developing a new model. Care for elders still relies on family, with lack of professionalism, little socialization, and expanding commodification. Second, the current care model is fundamentally detrimental to older women and women caregivers. Third, this kind of model hinders the overcoming of gender inequalities in intrafamily, generational, and social relations.     

Identification of the covariance structure of earnings using the GMM estimator

In recent years there has been a rapid growth in the number of studies that have used the GMM estimator to decompose the earnings covariance structure into its permanent and transitory parts. Using a heterogeneous growth model of earnings, we consider the performance of the estimator in this context. We use Monte Carlo simulations to examine the sensitivity of parameter identification to key features such as panel length, sample size, the degree of persistence of earnings shocks and the specification of the earnings model. We show that long panels allow the identification of the model, even when persistence in transitory shocks is high. Short panels, on the other hand, are insufficient to identify individual parameters of the model even with moderate levels of persistence.     

Parent–Child Communicational Characteristics: A Comparison Study between Subjects from Post-Divorce and Intact Nuclear Families

ABSTRACT

The occurrence of divorce seems to have impact on parent–child communication, with subsequent implications on the children well-being and development. The present study aims to analyze the influence that divorce has on parent–child communication comparing 102 participants from post-divorced families and 100 participants from intact nuclear families. Measures consisted of a sociodemographic questionnaire and Perception Scale of Parenting Communication. Despite literature indicators, the main findings reveal the absence of significant statistical differences between both family structures, concerning to parent–child communication. Overall, it was registered some statistically significant differences concerning to specific divorce variables. These findings demystifying the idea that post-divorce families establish less positive communication patterns when compared with intact nuclear families.     

Post-Traumatic Stress Disorder,Dissociation, and Neuropsychological Performance in Latina Victims of Childhood Sexual Abuse

This study compared the memory, attention/concentration, and executive functioning of 12 women with histories of child sexual abuse with a control group of 12 women without childhood abuse. Participants completed a neuropsychological test battery and various instruments assessing post-traumatic stress disorder and dissociation. The child sexual abuse group had lower performance than the control group on long- and short-term visual and verbal memory and presented more limited performance on executive functioning tasks. Functioning in these areas showed a negative correlation with post-traumatic stress disorder and dissociative symptoms. These findings suggest that child sexual abuse is associated with memory and executive functioning deficits and supports the idea that people with trauma histories and increased post-traumatic stress disorder and dissociation symptoms may have alterations in neuropsychological functioning.     

Colonialism at the margins: politics of difference in Europe as seen through two Icelandic crises

Scholars have for some time emphasised destabilising the boundaries between colonised and colonisers, in addition to calling for more nuanced analyses of colonialism. I focus here on the politics of difference on a global scale and how the internal logic dividing the world into ‘us’ and ‘other’ is still significant, using two cases revolving around an Icelandic struggle with ‘otherness’ at different times in history: one in 1905 and the other in 2008. I claim that the analysis of those at the margins of the dualistic divide of colonised and coloniser clearly brings out the oppositions at play within historical and contemporary global relationships of power and how participation in colonial ideologies involved multiple politics of identity and selfhood within Europe. Both cases show Icelandic anxieties about being classified with the ‘wrong’ people and their attempt to situate themselves within the ‘civilised’ part of the world.