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1.
Child‐care instability is associated with more behavior problems in young children, but the mechanisms of this relationship are not well understood. Theoretically, this relationship is likely to emerge, at least in part, because care instability leads to increased parenting stress. Moreover, low socioeconomic status and single‐mother families may be more vulnerable to the effects of instability. This study tested these hypotheses using data from the Fragile Families and Child Wellbeing study (N = 1,675) and structural equation modeling. Three types of child‐care instability were examined: long‐term instability, multiplicity, and needing to use back‐up arrangements. Overall, findings showed little evidence that parenting stress mediated the associations between care instability and child behavior problems among the full sample. Among single‐mother and low‐income families, however, needing to use back‐up arrangements had small positive associations with parenting stress, which partially mediated the relationship between that type of care instability and child externalizing behavior problems.  相似文献   
2.
Many recent findings have altered our vision of chromatin and its role in the regulation of cellular functions. Our perspective concerning chromatin has changed to a much more complex, but also more dynamic, view of chromatin as an entity that is intimately involved in the regulation of a variety of cellular functions. In this review, we describe the various types of proteins that alter the structure and, therefore, the function of chromatin and discuss the possible role of chromatin in cell aging. The elucidation of the mechanisms that link chromatin to aging will be one of the most exciting and striking advancements in the coming years  相似文献   
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4.
A probability distribution function F is said to be symmetric when 1 ‐ F(x) ‐ F(‐x) = 0 for all x∈ R. Given a sequence of alternatives contiguous to a certain symmetric F0, the authors are concerned with testing for the null hypothesis of symmetry. The proposed tests are consistent against any nonsymmetric alternative, and their power with respect to the given sequence can easily be optimized. The tests are constructed by means of transformed empirical processes with an adequate selection of the underlying isometry, and the optimum power is obtained by suitably choosing the score functions. The test statistics are very easy to compute and their asymptotic distributions are simple.  相似文献   
5.
This paper is framed within the context of the Fondecyt Research Project (No. 1061179) entitled “Senior Citizens' quality of life in an Urban Habitat: Valparaiso, a Case Study.” It investigates how certain topographical conditions in the urban habitat impact on the quality of life of the population's most senior age group. Following a theoretical approach, we discuss some of the initial results obtained in our field research, integrating a quantitative technique of territorial analysis, GIS maps, and the qualitative techniques of Focus Groups and ethnographic interviews. The study of senior citizens' perceptions of their quality of life in Valparaiso indicates that the city's irregular topography and character as a heritage city mediate how the elderly perceive the urban space, creating social networks and a sense of community uniquely their own.  相似文献   
6.
Resumen

El objetivo de la presente investigación fue estudiar qué mujeres iberoamericanas tenían un valor de modelo y cuáles eran sus características, en una muestra de U6 adolescentes mujeres del Area Metropolitana de Santiago de Chile, estratificada en tres niveles socioeconómicos.

El análisis estadístico de los resultados indicó un bajo nivel de información en los tres estratos socioeconómicos, tanto en relación a las mujeres que han aportado en el devenir histórico, como en relación a las mujeres contemporáneas. Se observaron diferencias significativas de información entre los tres niveles socioeconómicos, siendo mayor el nivel de desinformación de las adolescentes del nivel socioeconómico bajo.

El rango de mujeres mencionadas como significativas, tanto históricas como contemporáneas, reflejó poca variedad en los modelos. La mayor parte de las mujeres históricas mencionadas son chilenas, encontrándose una muy pequeña proporción de mujeres del resto de Iberoamérica.  相似文献   
7.
ABSTRACT

This article describes a project by the Virtual Teaching and Cyberpsychology Laboratory of the National Autonomous University of Mexico developed to (1) implement a teaching program for clinical psychology students to learn therapeutic skills in providing online psychological services; (2) evaluate the students' acquisition of knowledge and skills in diagnosis via the Internet, case formulation of treatment, and adherence to treatment protocols; and (3) incorporate technologies for creating training settings and online professional services in order to develop the students' clinical competency in this treatment modality. A pilot study was conducted with 17 clinical psychology students in the first phase of the teaching program and 6 students during the second phase. Preliminary results indicate that students increased knowledge of Internet-based clinical interventions and improved in clinical skills. It is necessary to continue the evaluation of the teaching program with larger samples, and further research is suggested.  相似文献   
8.
Dominant discourses and practices in international cooperation have been characterised by depoliticisation and unequal power relationships. However, a number of more transformative experiences of cooperation also exist, where joint work between Northern and Southern social organisations is linked with a more political perspective. These kinds of experiences can be considered processes of informal learning in social action: through shared actions, strategies and frameworks and through interaction between organisations, institutions and the grassroots, informal and multidimensional learning processes occur in the people and organisations engaged. The study approaches four cases of networks that have linked Spanish and Colombian organisations which promote advocacy and social mobilisation for the defence of human rights in Colombia. The results show that people engaged in the cases experience intense learning processes that are relevant for the construction of solidarities and a radical global citizenship, but that these processes are also replete with limitations, tensions and challenges.  相似文献   
9.
This article analyses the relationships between emigration and Official Development Aid (ODA) policies, taking the cases of Spain and Morocco as the backdrop to the study. It discusses the principal characteristics of both the Spanish state and non-governmental cooperation in Morocco, the underlying motivations of the principal stakeholders, and the way international cooperation policies now encompass the phenomenon of emigration. The paper compares the field of co-development, which encompasses a rather limited understanding of immigration, with ODA policies, in which immigration is an increasingly important agenda item for both the central government and the Spanish autonomous communities. The article then examines the relationship between migration and development, and considers necessary changes of perspective required to enhance the development and emigration policies in both Spain and Morocco. Lastly, we conclude with a series of recommendations, based on our analysis, aimed at Spanish and Moroccan stakeholders, both state institutions and non-governmental organizations.  相似文献   
10.
Many everyday collective emotions are shared emotional conventions, that is, social practices with an attributed emotional meaning (e.g., complimenting as a sign of conventional love). Emotional conventions lead to a collective priming of some categories of emotion. For example, New Year Eve's emotional conventions prime words such as "happy." We define emotional atmosphere and emotional climate as emotion accessibility caused by the priming of specific categories of emotion linked to emotional conventions. We report two sets of data in support of this approach: (1) the accessibility of categories of emotion in relation to unusual historical events (the 1992 World Expo in Seville and the March–April 2004 terrorist attacks in Madrid), and (2) the differential priming of specific categories of emotion on the Internet in different countries. We discuss the theoretical and practical implications of this approach to "emotional climate."  相似文献   
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