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101.
As Newey (1985) and Orme (1988) argue in the context of discrete binary choice models, the test of the information matrix (IM) is sensitive to heteroscedasticity and the incorrect distribution of the error term, with both these problems leading to inconsistency of the estimators obtained. This paper uses simulation experiments to analyse the size and power of the asymptotically efficient version of this test, with the aim of obtaining evidence on its capacity to detect such specification errors, considering different alternatives. 相似文献
102.
103.
Underemployment indicators are both ‘objective’ indicators of individual well-being and social welfare and ‘normative’ indicators for programmatic use. Components of an underemployment indicator framework, the Labor Utilization Framework (LUF), are operationally defined and shown to be closely related to a family of proposed alternatives. Using CPS data, a 12-year time series of LUF indicators is developed for the U.S. labor force and its key subgroups. The across-time heterogeneity of the labor force is analyzed in relation to a ‘basic’ demographic group-by-LUF-by-time contingency, showing how the complexity of labor force structure that emerges from a multi-state indicator of underemployment can be rigorously modeled. Standard loglinear models, which focus on the temporal aspects of data from repeated cross-sectional surveys, provide the analytic technique. Changes in the demographic composition of the labor force account for about 30% of the overall period variability, and age structure has made the most important contribution to the compositional change. 相似文献
104.
This study explored the life course experiences of older lesbians and their concerns and needs as they age. Interviews with sixty-two lesbians, age 55 and older, living in the three west coast states, revealed common themes related to coming out, family and partner relationships, sources of support, aging-related concerns, personal accomplishments, and hopes for the future. Implications for research with older lesbians and for appropriate social work practice and service delivery with this aging population are discussed. 相似文献
105.
Granillo MT Grogan-Kaylor A Delva J Castillo M 《Journal of research on adolescence》2011,21(4):762-768
The purpose of this study was to explore the prevalence and correlates of eating disorders among a community-based sample of female Chilean adolescents. Data were collected through structured interviews with 420 female adolescents residing in Santiago, Chile. Approximately 4% of the sample reported ever being diagnosed with an eating disorder. Multivariate logistic regression analyses revealed that those with higher symptoms of anxiety and who had tried cigarettes were significantly more likely to have been diagnosed with an eating disorder. Findings indicate that Chilean female adolescents are at risk of eating disorders and that eating disorders, albeit maladaptive, may be a means to cope with negative affect, specifically anxiety. 相似文献
106.
Zhang Z Schiamberg LB Oehmke J Barboza GE Griffore RJ Post LA Weatherill RP Mastin T 《Journal of elder abuse & neglect》2011,23(1):58-74
Although research on domestic elder abuse and neglect has grown over the past 20 years, there is limited research on elder neglect in nursing homes. The purpose of this study is to estimate the incidence of elder neglect in nursing homes and identify the individual and contextual risks associated with elder neglect. Data came from a 2005 random digit dial survey of individuals in Michigan who had relatives in long term care. Our analytic sample included 414 family members who had a relative aged 65 or older in nursing homes. Results showed that about 21% of nursing home residents were neglected on one or more occasion in the last 12 months. Two nursing home residents' characteristics reported by family members appear to significantly increase the odds of neglect: functional impairments in activities of daily living and previous resident-to-resident victimization. Behavior problems also are associated with higher odds of neglect (p = 0.078). Policy implications of these results are discussed. 相似文献
107.
In a recent article in this journal, Tipps and Gordon (1985) presented new indicators of underemployment and compared them to indicators obtained from the Labor Utilization Framework (LUF) of Hauser, Sullivan, Clogg, and others. In this note the Tipps-Gordon criticisms of LUF are reviewed, the Tipps-Gordon framework is criticized, and both LUF and the Tipps-Gordon approach are compared empirically as well as conceptually. An extension of LUF is also presented. 相似文献
108.
109.
Assessing the Relationship Between Environmental Lead Concentrations and Adult Blood Lead Levels 总被引:2,自引:0,他引:2
This paper presents a model for predicting blood lead levels in adults who are exposed to elevated environmental levels of lead. The model assumes a baseline blood lead level based on average blood lead levels for adults described in two recent U.S. studies. The baseline blood lead level in adults arises primarily from exposure to lead in diet. Media-specific ingestion and absorption parameters are assessed for the adult population, and a biokinetic slope factor that relates uptake of lead into the body to blood lead levels is estimated. These parameters are applied to predict blood lead levels for adults exposed to a hypothetical site with elevated lead levels in soil, dust and air. Blood lead levels ranging from approximately 3-57 μg/dl are predicted, depending on the exposure scenarios and assumptions. 相似文献
110.
Teresa Ghilarducci 《Journal of Labor Research》1990,11(2):203-216
Pensions are contingent claims contracts that are often fashioned by collective bargaining under conditions of asymmetric
information and market power. Pensions are not an employer’s or a union’s optimal contract; they represent compromise. Employers
use pensions to minimize labor costs and to adjust to market changes. Pensions help unions improve and protect their members’
work lives and help unions to survive as institutions. When workers’ estimations of their pensions differ from their employers’
estimations a moral hazard can exist. Less mobile workers and those with less influence subsidize the pension benefits of
other workers or reduce an employer’s costs. Econometric results based on data from the President’s Commission on Pension
Policy show that certain workers, namely women, overvalue their plans, which provides an opportunity to lower labor costs
and redistribute benefits. Unions have a contradictory effect on information.
The author thanks participants in the Cornell University Collective Bargaining workshop and the Harvard Labor Economics workshop.
I especially thank James Medoff for his comments. 相似文献