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261.
Trajectories of body mass and self-concept in black and white girls: the lingering effects of stigma
As a stigmatizing condition, obesity may lead to the internalization of devalued labels and threats to self-concept. Modified labeling theory suggests that the effects of stigma may outlive direct manifestations of the discredited characteristic itself. This article considers whether obesity's effects on self-concept linger when obese youth enter the normal body mass range. Using longitudinal data from the National Growth and Health Study on 2,206 black and white girls, we estimated a parallel-process growth mixture model of body mass linked to growth models of body image discrepancy and self-esteem. We found that discrepancy was higher and self-esteem lower in formerly obese girls compared to girls always in the normal range and comparable to chronically obese girls. Neither body image discrepancy nor self-esteem rebounded in white girls despite reduction in body mass, suggesting that the effects of stigma linger. Self-esteem, but not discrepancy, did rebound in black girls. 相似文献
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Medium-Sized companies usually have a specific organizational structure and corporate culture. This has implications for Human Resource Management, which is less systematized in medium-sized companies in comparison to larger organizations. What does ?medium-sized business“ mean and who is meant with that? Which typical values form its culture? What are the specific conditions for coaching in medium-sized businesses? Does a coach need special qualifications for this sector? This paper attempts to answer these questions and stays close to the everyday business of medium-sized companies. Concrete Examples will explain specific topics and coaching solutions for medium-sized businesses. 相似文献
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Chi-Lun Cheng Hans Schneeweiss & Markus Thamerus 《Journal of the Royal Statistical Society. Series B, Statistical methodology》2000,62(4):699-709
An adjusted least squares estimator, introduced by Cheng and Schneeweiss for consistently estimating a polynomial regression of any degree with errors in the variables, is modified such that it shows good results in small samples without losing its asymptotic properties for large samples. Simulation studies corroborate the theoretical findings. 相似文献
266.
We propose a generalized estimating equations (GEE) approach to the estimation of the mean and covariance structure of bivariate time series processes of panel data. The one-step approach allows for mixed continuous and discrete dependent variables. A Monte Carlo Study is presented to compare our particular GEE estimator with more standard GEE-estimators. In the empirical illustration, we apply our estimator to the analysis of individual wage dynamics and the incidence of profit-sharing in West Germany. Our findings show that time-invariant unobserved individual ability jointly influences individual wages and participation in profit sharing schemes. 相似文献
267.
Markus Frölich 《AStA Advances in Statistical Analysis》2007,91(3):279-290
Propensity score matching is now widely used in empirical applications
for estimating treatment effects. Propensity score matching (PSM) is preferred to matching on X because
of the lower dimension of the estimation problem. In this note, however, it is shown that PSM is inefficient
compared to matching on X. Hence, matching on X should be considered as a serious alternative. 相似文献
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Markus Jüster 《Organisationsberatung, Supervision, Coaching》2001,8(1):87-90
Ohne Zusammenfassung 相似文献