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71.
In this paper, we tested the resource dilution hypothesis, which posits that, because parenting resources are finite, the addition of a new sibling depletes parenting resources for other children in the household. We estimated growth curve models on the self‐reported parenting practices of mothers using four waves of data collected biennially between 1994 and 2000 on a nationally representative sample of 2,082 Canadian children aged 2 to 5 at initial interview and in continuously intact, two‐biological‐parent households. Results showed that when new children were added to the household, mothers exhibited declines in positive interaction, but increased their levels of consistent parenting. Taken together, these findings suggested that parenting resources were reallocated, rather than diluted, when family size increased.  相似文献   
72.
This study examines a firm's quality and price decisions when consumers differ not only in their willingness‐to‐pay for quality but also in their reservation utility for the basic product. We find that while the firm offers lower‐quality products when consumers' valuations for quality deteriorate, the optimal quality may increase with a negative shift in consumers' reservation utilities. We also investigate the optimal price and quality of the products within a vertically differentiated product line when the number of products is exogenously given. The existing literature shows that when consumers differ only in their willingness‐to‐pay for quality, the firm sets the efficient quality for consumers with the highest valuation for quality, whereas the concern for cannibalization pushes down the quality of inferior products. We find that when consumers are heterogeneous in both their reservation utility and valuation for quality, the concern for cannibalization may distort the quality upwards, even for consumers with the highest willingness‐to‐pay for quality. In addition, a low‐quality product may enjoy a higher profit margin than a high‐quality product within the product line.  相似文献   
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This piece explores the emergent themes and subthemes represented within the recent contemporary discourse on Native American food security. Analysis revealed traditional foods as the most common theme present within the sampled literature. We offer a review of this theme (and related subthemes such as food access and human and environmental health) to illuminate the primary concerns, opportunities, preferences, and barriers associated with Native American food security. Our assessments also provide a nuanced understanding of existing literature related to food security and sovereignty, as well as key dimensions of environmental and social equality.  相似文献   
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Numerous studies have been carried out to estimate the prevalence of same-gender sexual behavior. Among studies conducted in recent years, few confirm the commonly quoted figure of 10%. Yet several studies in the early 2000s indicated that the prevalence of same-gender sex may be increasing, especially among women. This article reexamines the trends identified in previous research by using General Social Survey data from 1988 to 2010 and by focusing on multiple measures of same-gender sex over time. Results indicate that for both women and men the likelihood of having had a same-gender sexual partner since age 18 continued to increase through the 2000s, but that the likelihood of having had a same-gender sexual partner in both the past year and in the past five years leveled off for women and reversed for men. Results also indicate that the percentage of people reporting a pattern of predominantly same-gender sexual behavior has neither increased nor decreased over time. A similar result was found among persons who reported being in a same-gender sexual relationship. Overall, results paint a more complex picture than prior studies in characterizing trends in same-gender sexual behavior.  相似文献   
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VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - This article presents a new strategy for reviewing large, multidisciplinary academic literatures: a multi-method...  相似文献   
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Global population aging has led to considerable disquiet about future support for frail older people; however, the determinants are poorly understood. Moreover, most industrialized societies have witnessed considerable changes in family behavior (e.g., rises in divorce and declining fertility). Such trends may have adversely affected the support systems of older people; nonetheless, only recently has research begun to address this issue. Employing data from the longitudinal British Household Panel Survey (1991–2003) and the 1998 Indagine Multiscopo sulle Famiglie "Famiglia, soggetti sociali e condizione dell'infanzia," we investigated the association between family disruptions due to divorce, separation, or death and three key dimensions of informal support: (i) frequency of contact with unrelated friends (among all respondents aged 65 years and over); (ii) co-residence with children (among unmarried mothers aged 65 years and over); and (iii) regular or frequent help received from children (e.g., household assistance including care) among parents aged 65 years and over. In addition, we conducted a comparative investigation of the relationship between family disruptions and the use of home care services (i.e., health visitor or district nurse; home help; meals-on-wheels) among parents aged 65 years and over. Our findings suggest that in a culture like the U.K.'s, where relations between kin are primarily influenced by individualistic values, support in later life appears to be primarily related to need, whereas in societies with a strong familistic culture (like Italy's), support is received irrespective of the older person's individual characteristics.  相似文献   
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Critical gerontology views aging as a social construction that reflects the intersections of micro-processes with the macro-level forces of individual aging experiences. In the contexts of immigration and transnationalism, however, the macro-structural conditions, dynamics and experiences of aging have become further diversified and complicated. The dearth of empirical and explanatory knowledge in this area has inhibited us from comprehending aging in a changing world. Drawing on data from a study of Chinese grandparents' experiences of transnational caregiving in Canada, this article examines the impacts of such experiences on three interconnected dimensions – spatial, temporal and cognitive – of aging. Although the practice of transnational caregiving allows skilled immigrant families to mobilize care resources outside Canada, it has not only ruptured the traditional trajectories of aging for their elderly parents, but also complicated the inequalities that they have to bear on individual, familial and transnational levels. I argue that the critical examination of aging in the context of transnational caregiving helps us take into consideration those dimensions (such as place, space, time, and knowledge) that are changed by immigration processes, and rethink aging from a broader perspective that links seniors' experiences with their relationship with their adult immigrant children's families and macro-structures outside national borders.  相似文献   
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