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The hypothesis that irritability and contingency detection are negatively correlated was examined in thirty‐one 6‐month‐old infants. Observation and maternal report‐based assessments of irritability were correlated with both a criterion score and a continuous score of contingency detection. Results indicated that greater irritability in infants was associated with lower contingency detection scores. Discussion focuses on identifying processes by which the 2 constructs may be associated. 相似文献
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Why do African Americans report higher levels of perceived job insecurity than whites? We analyze data from the 1996 and 1998 General Social Survey to test alternative predictions from the compositional, inclusive‐discrimination, and dispositional perspectives concerning the sources of the racial gap in perceived insecurity. Results from ordered probit regressions provide most support for the inclusive‐discrimination perspective, which maintains that employment practices associated with “modern racial prejudice” induce perceived insecurity on a widespread and generalized basis among African Americans. Accordingly, compared to whites, African Americans experience perceived insecurity net of human capital credentials and job/labor market characteristics. Additional analyses provide one qualification to these findings: dynamics associated with the inclusive‐discrimination perspective are more pronounced in the private sector than the public sector. 相似文献
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Mohammad Salehi M. George A.F. Seber 《Australian & New Zealand Journal of Statistics》2004,46(3):483-494
Not having a variance estimator is a seriously weak point of a sampling design from a practical perspective. This paper provides unbiased variance estimators for several sampling designs based on inverse sampling, both with and without an adaptive component. It proposes a new design, which is called the general inverse sampling design, that avoids sampling an infeasibly large number of units. The paper provide estimators for this design as well as its adaptive modification. A simple artificial example is used to demonstrate the computations. The adaptive and non‐adaptive designs are compared using simulations based on real data sets. The results indicate that, for appropriate populations, the adaptive version can have a substantial variance reduction compared with the non‐adaptive version. Also, adaptive general inverse sampling with a limitation on the initial sample size has a greater variance reduction than without the limitation. 相似文献
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Duane W. Crawford Renate M. Houts Ted L. Huston Laura J. George 《Journal of marriage and the family》2002,64(2):433-449
This study challenges the prevailing view that marital companionship promotes marital satisfaction. By following a cohort of married couples for over a decade and by incorporating several methodological improvements—such as refining the measurement of marital satisfaction, determining how much spouses enjoy doing the leisure activities they pursue together and apart, and using diary data to portray marital leisure patterns—we found that the association between companionship and satisfaction is less robust than previously believed, and that it depends on how often spouses pursue activities that reflect their own and their partner's leisure preferences. Over time, involvement in leisure liked by husbands but disliked by wives, whether as a couple or by husbands alone, is both a cause and a consequence of wives' dissatisfaction. 相似文献
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The government, the market, and the problem of catastrophic loss 总被引:1,自引:0,他引:1
George L. Priest 《Journal of Risk and Uncertainty》1996,12(2-3):219-237
This article addresses the comparative advantage of the government to the private property/casualty insurance industry for the provision of insurance coverage for catastrophic losses. That the government can play an important role as an insurer of societal losses has been a central public policy principle since at least the New Deal. In addition, our government typically automatically provides forms of specific relief following unusually severe or unexpected disasters, which itself can be viewed as a form of ex post insurance. This article argues that, for systemic reasons, the government is much less effective than the private property/casualty insurance market in providing coverage of losses generally, but especially of losses in contexts of catastrophes. 相似文献
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George Becker 《Sociological Forum》1992,7(4):641-660
The Merton thesis identifies two movements — English Puritanism and German Pietism — as causally significant in the development of the scientific revolution of the 17th and 18th centuries. It attributes this connection to a strong compatibility between the values of ascetic Protestantism and those associated with modern science. This article questions Merton's conclusion regarding one of these movements, German Pietism, by arguing that the Pietist ethos stood in sharp conflict with what Merton has called the normative structure of science. One manifestation of this conflict involves Friedrich Oetinger's articulation of a contending religious-mystical conception of science, which assigned a central place to feeling, intuition, the role of the divine, and a qualitative approach to nature. This conception of science, it is argued, provides the clearest indication of the conceptual and valuative distance that tended to separate Pietists from the new science of the 17th and 18th centuries.An earlier version of this article was presented at the 1990 meeting of the Society for the Scientific Study of Religion, in Virginia Beach. 相似文献