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211.
Fifty families participated in mother‐infant and father‐infant still‐face interaction at infant ages 3 and 6 months as part of a study of affect in early parent‐infant relationships. Infants' positive and negative affect and parents' positive affect and physical play were coded from videotapes. Consistent with previous research, during the normal condition, mothers displayed more positive affect than did fathers, and fathers were more likely than mothers to display physical play. Infants were more positive with mothers than with fathers. Parents' positive affect but not parent gender predicted infants' positive affect at 6 months. During the still‐face condition, infants of parents with a lifetime history of depression were more likely to display negative affect and less likely to display positive affect than infants with no such parent history. Infants' affect was unrelated to parents' current level of depressive symptoms, which indicates the value of considering family history of psychopathology when examining individual differences in infants' affect. 相似文献
212.
213.
The effect of skewness on hypothesis tests for the existence of a mixture of univariate and bivariate normal distributions is examined through a Monte Carlo study. A likelihood ratio test based on results of the simultaneous estimation of skewness parameters, derived from power transformations, with mixture parameters is proposed. This procedure detects the difference between inherent distributional skewness and the apparent skewness which is a manifestation of the mixture of several distributions. The properties of this test are explored through a simulation study. 相似文献
214.
Nicholas M. Kiefer 《Econometric Reviews》2013,32(2):113-148
Abstract In this paper we discuss different aspects of long memory behavior and applicable parametric models. We discuss the confusion that can arise when the empirical autocorrelation function decreases in a hyperbolic way. 相似文献
215.
Nicholas C. Petruzzi Kwan E. Wee Maqbool Dada 《Production and Operations Management》2009,18(6):693-704
We study the newsvendor problem when consumers are heterogeneous either in their valuations of the newsvendor's product, in their valuations of an outside option available to them, or in both valuations. In this context, we observe that the outside option, which represents the value that a given consumer associates with choosing not to purchase the newsvendor's product, may be interpreted as a search cost. Taking into consideration whether consumers' valuations differ on either one dimension of heterogeneity or on both dimensions, we develop a framework for classifying newsvendor models that incorporate demand‐management effects. In particular, we show that this framework includes both the newsvendor model with price‐dependent demand and the newsvendor model with endogenous demand as special cases. In addition to making a conceptual contribution by developing and drawing insights from this framework, we make technical contributions by providing more general sufficient conditions under which the underlying optimization problems are well behaved. 相似文献
216.
Beach SR Schulz R Degenholtz HB Castle NG Rosen J Fox AR Morycz RK 《Journal of official statistics》2010,26(3):507-533
Demographic trends indicate an aging population, highlighting the importance of collecting valid survey data from older adults. One potential issue when surveying older adults is use of technology to collect data on sensitive topics. Survey technologies like A-CASI and IVR have not been used with older adults to measure elder mistreatment. We surveyed 903 adults age 60 and older in Allegheny County, Pennsylvania (U.S.) with random assignment to one of four survey modes: (1) CAPI, (2) A-CASI, (3) CATI; and (4) IVR. We assessed financial, psychological, and physical mistreatment, and examined feasibility of A-CASI and IVR, and effects on prevalence estimates relative to CAPI and CATI. Approximately 83% of elders randomized to A-CASI/IVR used each technology, although 28% of respondents in the A-CASI condition refused to use headphones and read the questions instead. A-CASI produced higher six month prevalence rates of financial and psychological mistreatment than CAPI. IVR produced higher six month prevalence rates of psychological mistreatment than CATI. We conclude that, while IVR may be useful, A-CASI offers a more promising approach to the measurement of elder mistreatment. 相似文献
217.
This paper examines gender differences in awareness, preparedness and attitudes towards bushfire amongst landholders in rural landscapes affected by amenity-led in-migration in southeast Australia. It considers the potential of conceptualising bushfire not as a gender-neutral natural phenomenon but as an important means by which traditional gender roles and power relations within rural landscapes are maintained. Landholders were found to uphold conventional views of bushfire management as “men’s business” despite changing social circumstances. Consequently, key gender differences exist within landholders’ bushfire risk awareness, bushfire knowledge, the perceived need for bushfire preparedness measures, the willingness to perform certain tasks, and the belief in personal capacity to act. We argue that covert and less visible as well as overt gender roles and traditions are important factors in understanding landholders’ engagement with bushfire management. When gendered dimensions of bushfire are investigated in the context of hegemony, a paradox emerges between women choosing not to take control of their own bushfire safety and women being denied the opportunity to take control. The complex and contradictory actions and attitudes to bushfire that materialise through an analysis of gendered social experiences complicate attempts to create more gender-sensitive frameworks for bushfire management. The tenacious and embedded nature of gender role divisions within both public and private spheres was furthermore found to act as economic, social and political stumbling blocks for empowerment opportunities. Using a mixed-methods research approach, this paper maps out gendered dimensions of bushfire through landholders’ narratives and actions. The implications of these dimensions for bushfire management have direct relevance to recent international discussions of the vulnerability of the growing number of people living in bushfire-prone rural–urban interface areas. 相似文献
218.
Nicholas Hoover Wilson 《Sociological review mongraph》2016,64(2):61-78
Field analysis and the relational approach to historical social-scientific explanation of which it is an instance – helps illuminate the administrative dynamics of empires. While most studies of imperial dynamics emphasize the ‘high imperialism’ of the nineteenth and twentieth centuries, this article extends field analysis to a crucial case from the second half of the eighteenth century: the English East India Company's transition from a (largely) merchant trading company to a territorial power. In this disordered space of administration, officials struggling with one another for metropolitan recognition provided moral accounts of themselves which, on the one hand, explained their behaviour in terms drawn from abstract, purportedly universal social spaces, and, on the other hand, claimed credibility through a personal ‘interest in disinterest’. I argue that these moral accounts helped delimit the boundaries of and shape the dynamics within a distinctively imperial administrative field. To analyse this transformation, I suggest a synthesis of three varieties of relational analysis: Bourdieu's field theory, Fligstein and McAdam's analysis of strategic action fields, and Padgett and Powell's work on network folding and robust action. 相似文献
219.
Nicholas M. Harrigan 《The British journal of sociology》2017,68(4):718-753
What motivates corporate political action? Are corporations motivated by their own narrow economic self‐interest; are they committed to pursuing larger class interests; or are corporations instruments for status groups to pursue their own agendas? Sociologists have been divided over this question for much of the last century. This paper introduces a novel case – that of Australia – and an extensive dataset of over 1,500 corporations and 7,500 directors. The paper attempts to understand the motives of corporate political action by examining patterns of corporate political donations. Using statistical modelling, supported by qualitative evidence, the paper argues that, in the Australian case, corporate political action is largely motivated by the narrow economic self‐interest of individual corporations. Firms’ interests are, consistent with regulatory environment theory, defined by the nature of government regulation in their industry: those in highly regulated industries (such as banking) and those dependent on government support (such as defence) tend to adopt a strategy of hedging their political support, and make bipartisan donations (to both major parties). In contrast, firms facing hostile regulation (such as timber or mining), and those without strong dependence on state support (such as small companies) tend to adopt a strategy of conservative partisanship, and make conservative‐only donations. This paper argues that regulatory environment theory needs to be modified to incorporate greater emphasis on the subjective political judgements of corporations facing hostile regulation: a corporation's adoption of conservative partisanship or hedging is not just a product of the objective regulation they face, but also whether corporate leaders judge such regulation as politically inevitable or something that can be resisted. Such a judgement is highly subjective, introducing a dynamic and unpredictable dimension to corporate political action. 相似文献
220.