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11.
S. S. Wulff 《Statistics》2013,47(1):53-65
In a variance components model for normally distributed data, for a specified vector of linear combinations of the variance components, necessary and sufficient conditions are given under which the vector has a uniformly minimum variance unbiased translation-invariant estimator. The competing class of estimators is not restricted to those that are quadratic. For classification models, the conditions are translated into easy-to-check partial balance requirements on the incidence array. 相似文献
12.
Petter Lundborg 《Journal of population economics》2013,26(2):673-701
This paper estimates the health returns to schooling, using a twin design. For this purpose, I use data on monozygotic twins from the Midlife in the United States survey. The results suggest that completing high school improves health, as measured through self-reported health, chronic conditions, and exercise behavior, but that additional schooling does not lead to additional health gains. Controlling for certain early life factors that may vary within twin pairs does not alter the main conclusions of this paper. 相似文献
13.
Chenail RJ George SS Wulff D Duffy M Scott KW Tomm K 《Journal of marital and family therapy》2012,38(1):241-264
Based upon a qualitative metasynthesis of 49 articles centered on clients' experiences of their conjoint couple and family therapy, the investigators constructed a grounded formal theory of Clients' Relational Conceptions of Conjoint Couple and Family Therapy Quality. The theory suggests from pretherapy conceptions to posttherapy reflections, clients' perceptions of conjoint couple and family therapy quality appear to consist of clients' constructed meanings regarding a series of interrelated relationships between clients and their therapists and therapy environments, between clients and themselves, between clients and other family members, and between process and outcome both inside and outside therapy. Within and across these relationships, clients appear to focus on expectations, connections, balance, and change when evaluating the quality of their clinical experiences. Based upon this theory, the investigators recommend that researchers continue to explore this clinical phenomenon and that therapists regularly seek clients' conceptions of quality in therapy. 相似文献
14.
Free social spaces have long been emphasized in the social movement literature. Under names such as safe spaces, social havens, and counterpublics, they have been characterized as protective shelters against prevailing hegemonic ideologies and as hubs for the diffusion of ideas and ideologies. However, the vast literature on these spaces has predominantly focused on internal dynamics and processes, thus neglecting how they relate to the diffusion of collective mobilization. Inspired by formal modeling in collective action research, we develop a network model to investigate how the structural properties of free social spaces impact the diffusion of collective mobilization. Our results show that the assumption of clustering is enough for structural effects to emerge, and that clustering furthermore interacts synergistically with political deviance. This indicates that it is not only internal dynamics that play a role in the relevance of free social spaces for collective action. Our approach also illustrates how formal modeling can deepen our understanding of diffusion processes in collective mobilizations through analysis of emergent structural effects. 相似文献
15.
We provide new evidence on some of the mechanisms reflected in the intergenerational transmission of human capital. Applying both an adoption and a twin design to rich data from the Swedish military enlistment, we show that greater parental education increases sons’ cognitive and non-cognitive skills, as well as their health. The estimates are in many cases similar across research designs and suggest that a substantial part of the effect of parental education on their young adult children’s human capital works through improving their skills and health. 相似文献
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Debra Nixon PhD Marsha T. Carolan PhD Sally St. George PhD Dan Wulff PhD 《Journal of marital and family therapy》2006,32(1):127-129
Anderson, S., & Middleton, V. (2005). Explorations in privilege, oppression, and diversity .
Catherall, D. R., (Ed.). (2004). Handbook of stress, trauma and the family .
Sprenkle, D. H., & Piercy, F. P. (Eds.). (2005). Research methods in family therapy 相似文献
Catherall, D. R., (Ed.). (2004). Handbook of stress, trauma and the family .
Sprenkle, D. H., & Piercy, F. P. (Eds.). (2005). Research methods in family therapy 相似文献
20.
Individuals’ perception of their own road-traffic and overall mortality risks are examined in this paper. Perceived risk is
compared with the objective risk of the respondents’ peers, i.e. their own gender and age group, and the results suggest that
individuals’ risk perception of their own risk is biased. For road-traffic risk we obtain similar results to what have been
found previously in the literature, overassessment and underassessment among low- and high-risk groups, respectively. For
overall risk we find that all risk groups underestimate their risk. The results also indicate that men's risk bias is larger
than women’s.
相似文献
Henrik AnderssonEmail: |