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Peer sociometrics and teachers' friendship reports were compared in 2179 preschool dyads. One hundred twenty of 306 reciprocated friend dyads from peer sociometric data were also identified as good friends by their classroom teachers, and 301 of 600 of non‐reciprocated dyads in peer data were named as friends by one or both classroom teachers (overall kappa = .16). Friendship classifications from both peer and teacher data had significant relations with variables relevant to peer interactions, social skills, peer acceptance, and teacher‐rated scales (six of seven tests significant for peer data; five of eight significant for teacher data). Multilevel analyses indicated that friendship status effects were not qualified by classroom‐level differences. Findings suggest that sociometric tasks can identify preschoolers' peer friendships and that the range of correlates may be broader in peer‐choice data than in teachers' friendship evaluations. 相似文献
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Mina Shafer 《Australian and New Zealand Journal of Family Therapy》2008,29(3):156-168
This article presents a case study on the use of arts‐based resources in family therapy to help children and their post‐separation families describe their experience, communicate and collaborate with each other, witness and learn about each other, and develop their individual and family well‐being. 相似文献
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风险投资退出机制在风险投资的运作过程中具有重要地位,本文基于风险投资的效益最大化原则,运用灰色理论对风险投资退出方式进行决策分析,然后用层次分析法对IPO、并购、管理层回购和清算四种方式进行评价.从而为研究风险投资资金的退出时机和退出方式提供参考. 相似文献
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Using structural equation modeling analyses weexamined the correlation in levels of depressionsymptoms within couples to determine whether theunderlying mechanism is due to common stressors,empathic reactions, or crossover via social interaction.The analyses were based on two waves of data collectionfrom a sample of 354 male Vietnam veterans, Era veterans(veterans who served elsewhere during the period of the Vietnam War), and nonveterans andfrom their wives or committed partners. The resultsdemonstrated that the correlation in depression symptomswithin couples is due primarily to common stressors and crossover via negative social interaction.Common stressful life events increase depression in bothspouses, and this in turn increases social undermining,which further increases depression. 相似文献
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This research uncovers a pattern of support and the existence of a relationship network that runs strongly counter to the stereotyped view that lesbians in later life find themselves friendless and without support. The hypothesis that the older lesbian has developed friendship networks to replace missing or weak kin ties is substantiated. The findings are based on 20 in-depth, structured interviews with lesbians whose ages range from 50 to 73. 相似文献
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In this article, another version of the generalized exponential geometric distribution different to that of Silva et al. (2010) is proposed. This new three-parameter lifetime distribution with decreasing, increasing, and bathtub failure rate function is created by compounding the generalized exponential distribution of Gupta and Kundu (1999) with a geometric distribution. Some basic distributional properties, moment-generating function, rth moment, and Rényi entropy of the new distribution are studied. The model parameters are estimated by the maximum likelihood method and the asymptotic distribution of estimators is discussed. Finally, an application of the new distribution is illustrated using the two real data sets. 相似文献
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AbstractWe introduce here the truncated version of the unified skew-normal (SUN) distributions. By considering a special truncations for both univariate and multivariate cases, we derive the joint distribution of consecutive order statistics X(r, ..., r + k) = (X(r), ..., X(r + K))T from an exchangeable n-dimensional normal random vector X. Further we show that the conditional distributions of X(r + j, ..., r + k) given X(r, ..., r + j ? 1), X(r, ..., r + k) given (X(r) > t)?and X(r, ..., r + k) given (X(r + k) < t) are special types of singular SUN distributions. We use these results to determine some measures in the reliability theory such as the mean past life (MPL) function and mean residual life (MRL) function. 相似文献
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Johnson Michelle L. Novem Auyeung D. S. Sonti Nancy F. Pregitzer Clara C. McMillen Heather L. Hallett Richard Campbell Lindsay K. Forgione Helen M. Kim Mina Charlop-Powers Sarah Svendsen Erika S. 《Urban Ecosystems》2019,22(1):77-90
Urban Ecosystems - Understanding the structure and function of urban landscapes requires integrating social and ecological research. Here, we integrate parallel social and ecological assessments of... 相似文献