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In recent years there has been a rapid growth in the number of studies that have used the GMM estimator to decompose the earnings covariance structure into its permanent and transitory parts. Using a heterogeneous growth model of earnings, we consider the performance of the estimator in this context. We use Monte Carlo simulations to examine the sensitivity of parameter identification to key features such as panel length, sample size, the degree of persistence of earnings shocks and the specification of the earnings model. We show that long panels allow the identification of the model, even when persistence in transitory shocks is high. Short panels, on the other hand, are insufficient to identify individual parameters of the model even with moderate levels of persistence. 相似文献
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Doris L. Milke James Leask Chelsy George Sandra Ziolkowski 《Journal of Housing for the Elderly》2013,27(3):298-328
Eight years of data analysis on residents’ status from three small Alzheimer care centers suggest notable stability in function. Individuals’ functional ability was best in their first year, but their year-to-year decline was mostly not significant. Cognitive abilities also were best in the resident's first year, but first-, second-, and third-year cognitive scores were not significantly different. We compared the residents’ dementia progression rate to the true rate of natural disease progression. This study, like others on small homelike settings, suggests that appropriate homelike environments maintain persons with dementia at an optimum level longer. 相似文献
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Roxanne Jamshidi Allison J. Oppenheimer Doris S. Lee Felice H. Lepar Thomas J. Espenshade 《Population research and policy review》1992,11(2):169-190
Expanding longevity among the elderly and fertility decline are contributing to an aging US population. The number of persons 65 years or older is projected to double from about 32 million in 1990 to 66 million by 2030; the elderly proportion is expected to increase from 13 to 22 percent over the same period. Chronic illness and functional disability afflicts a significant proportion of older persons. An estimated 80–85 percent of people over age 65 have at least one chronic illness, and nearly one-half of older people report that chronic illness limits their activity to some degree. Altogether, about one-third of the population over 65 may need some kind of medical or social assistance. This paper discusses the three primary modes of care available to older persons: (1) the informal network of the family, (2) the more formal arrangements of home and community care, and (3) the institutionalized care of nursing homes. Of particular policy interest are the questions: Who provides the care? What type of care is available? Who receives the care? How much does each type of care cost? and Who pays? The current patterns and costs especially of long-term care provide a framework for planning future options. A discussion of research and policy recommendations concludes the paper. 相似文献
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Doris Hanappi Valérie-Anne Ryser Laura Bernardi Jean-Marie Le Goff 《Revue europeenne de demographie》2017,33(3):381-407
How do changes in employment uncertainty matter for fertility? Empirical studies on the impact of employment uncertainty on reproductive decision-making offer a variety of conclusions, ranging from gender and socio-economic differences in the effect of employment uncertainty on fertility intentions and behaviour, to the effect of employment on changes in fertility intentions. This article analyses the association between a change in subjective employment uncertainty and fertility intentions and behaviour by distinguishing male and female partners’ employment uncertainty, and examines the variation in these associations by education. Using a sample of men and women living in a couple from the Swiss Household Panel (SHP 2002–2011), we examine through multinomial analysis how changes in employment uncertainty and selected socio-demographic factors are related to individual childbearing decisions. Our results show strong gendered effects of changes in employment uncertainty on the revision of reproductive decisions among the highly educated population. 相似文献
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Doris Schedlitzki Pasi Ahonen Paresh Wankhade Gareth Edwards Hugo Gaggiotti 《国际管理评论杂志》2017,19(2):237-257
This paper critically reviews existing contributions from the field of cultural leadership studies with a view to highlighting the conceptual and methodological limitations of the dominant etic, cross‐cultural approach in leadership studies and illuminating implications of the relative dominance and unreflective use of the English language as the academic and business lingua franca within this field. It subsequently outlines the negative implications of overlooking cultural and linguistic multiplicity for an understanding of culturally sensitive leadership practices. In drawing on lessons from this critical review and the emergent fields of emic, non‐positivist cultural leadership studies, this analysis argues that the field of cultural leadership studies requires an alternative research agenda focused on language multiplicity, which enables the field to move towards emic, qualitative research that helps to empower individual cultural voices and explore cultural intra‐ and interrelationships, tensions and paradoxes embedded in leadership processes. The paper concludes by offering suggestions on methodological approaches for emic cultural leadership studies that are centred on the exploration of language as a cultural voice. 相似文献
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Doris Rosenauer Astrid C. Homan Christiane A. L. Horstmeier Sven C. Voelpel 《英国管理杂志》2016,27(3):628-645
In light of the workforce's increasing nationality diversity, our study explores the antecedents for the successful management of nationality diversity as visualized in a favourable diversity climate and enhanced team performance. We propose a double‐contingency model in which we argue that the effects of nationality diversity will be dependent upon task interdependence and leaders’ cultural intelligence. We propose that nationality diversity will be more consequential in more interdependent teams, in which team interactions and processes are more salient. Moreover, team leaders with higher cultural intelligence will possess the skills to foster adequate team processes and thereby enhance diversity climate and performance of nationally diverse, more interdependent teams. We collected multi‐source data from 63 work teams (N = 410) and their supervisors at a German facility management company. Moderated regression analyses supported the hypothesized three‐way interaction between nationality diversity, task interdependence and leaders’ cultural intelligence. Additional simple slope analysis showed that nationality diversity is positively related to diversity climate and performance only when both team leaders’ cultural intelligence and task interdependence are high. Our study not only provides recommendations for successful nationality diversity management but also yields theoretical implications for diversity and cultural intelligence research. 相似文献
20.
Doris Bertocci M.S.W. Marshall D. Schechter M.D. 《Smith College studies in social work》2013,83(2):179-196
Abstract This paper extracts some common themes that have emerged from various studies of adoptees’ searches and reunions. It then considers the potential relevance of these themes in sharpening the diagnostic and therapeutic acumen of the dynamically‐oriented clinician treating the adopted client. Implied are modifications in treatment approaches that should be considered in working with the adoptee. 相似文献