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Bifulco R 《Evaluation review》2002,26(5):545-572
This article discusses potential sources of self-selection bias in quasi-experimental evaluations of whole-school reform models and considers how individual student-level data might be used to provide valid impact estimates. Although repeated pretreatment and posttreatment measures of student performance can provide unbiased estimates under relatively weak assumptions, such data are difficult to obtain. The article develops an instrumental variable strategy that can be used to improve on common value-added estimators when only posttreatment measures of performance are available. Using data from New York City, the author shows that the instrumental variable strategy can provide estimates of model impacts similar to those provided by a difference-in-differences estimator provided that appropriate instruments are used. 相似文献
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Institutional Change and Coproduction of Public Services: The Effect of Charter Schools on Parental Involvement 总被引:1,自引:0,他引:1
Recent discussions of school choice have revived arguments thatthe decentralization of governing institutions can enhance thequality of public services by increasing the participation ofintended beneficiaries in the production of those services.We use data from the Schools and Staffing Survey to examinethe extent to which the decentralization of authority to charterschools induces parents to become more involved in their children'sschools. We find that parents are indeed more involved in charterschools than in observationally similar public schools, especiallyin urban elementary and middle schools. Although we find thatthis difference is partly attributable to measurable institutionaland organizational factors, we also find that charter schoolstend to be established in areas with above-average proportionsof involved parents, and we find suggestive evidence that, withinthose areas, it is the more involved parents who tend to selectinto charter schools. Thus, while the institutional characteristicsof charter schools do appear to induce parents to become moreinvolved in their children's schools, such characteristics areonly part of the explanation for the greater parental involvementin charter schools than in traditional public schools. 相似文献
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In the manufacturing organization cost or more specifically cost reduction is an everyday obsession with managers and engineers. To compete globally and win new contracts, manufacturing firms need to learn how to be responsive, lean and efficient. On the other hand, in order to retain and motivate workers, improve systems efficiency and conform to various regulations including health, safety and the environment, manufacturing firms need to continuously invest. Both opposing pressures create a challenging environment for manufacturing managers and engineers. This paper introduces research into how the manufacturing environment is changing and in particular the type of issues that manufacturing managers and engineers need to learn. The paper presents the first results of a study being conducted by a number of academic institutions and industries from around the world into manufacturing education issues. The principle aim of the research consortium is to anticipate the needs of manufacturing organization of the future and to provide a framework for curriculum development within universities that meet these needs. This paper specifically outlines the results of a study of existing manufacturing curricula from around the world and takes an in-depth look at four recently developed masters programmes. 相似文献
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This article analyses four cases of governance in Italian local welfare systems. Following Law 328/2000, the design and management of the social services system in Italy involve different public responsibility levels, mainly regional and municipal. In order to manage social policies, Italian municipalities have to join in new inter‐municipal groupings called ‘Piani di Zona’ (Area Plans). Moreover, the law provides for engaging in these Plans even local third‐sector organizations and citizens. The article attempts to highlight the implications of this complex system that is leading local authorities to open new governance arenas. We hereby present the results of a research project on two Piani di Zona in the Region of Lombardy (Northern Italy) and on two in the Region of Campania (Southern Italy), carried out by means of institutional analysis. We particularly focus on the dynamics of participation triggered by the Piani di Zona. Our hypothesis is that the role of public administration is a fundamental variable to understand the different ways of participating. In this sense, we discuss the dynamics of local governance by relaying them to four main questions: who participates in what, where and how? 相似文献
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In social identity analyses of leadership the role of leader group prototypicality (the extent to which the leader is representative of the collective identity) in leadership effectiveness is emphasized. We extend this analysis by identifying role ambiguity as a situational influence that feeds into the desire to reduce uncertainty, as a moderator of the relationship between leader group prototypicality and indicators of leadership effectiveness (perceived effectiveness, job satisfaction and turnover intentions). Role ambiguity is proposed to lead people to turn to their group memberships, making leadership effectiveness more contingent on the extent to which leaders are group prototypical. Results of a survey of n=368 employees of four Italian companies supported this hypothesis. Role ambiguity and leader group prototypicality interacted in predicting perceived effectiveness, job satisfaction and turnover intentions, such that leader group prototypicality was more strongly related to leadership effectiveness for employees experiencing greater role ambiguity. 相似文献
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Lavinia Bifulco Massimo Bricocoli Raffaele Monteleone 《Social Policy & Administration》2008,42(2):143-159
This article deals with the development of local welfare in Italy and is grounded on a research project focusing on activation as a main feature of change in Italian social policies. Along with decentralization processes, many Italian regions have been acting as policy laboratories, developing and testing very different approaches according to their political attitude. On the one hand this results in a fragmented policy landscape which is difficult to recompose, and, moreover, in growing inequalities in the Italian welfare system. On the other hand, it opens opportunities for experimentation on institutional and organizational structures on a regional scale, creating a variety of practices for research and policy analysis. In the article we first describe the main trends in national social policies, with a specific focus on the dynamics of change referring to activation. We will then focus on a pilot programme which is aiming at the promotion and implementation of innovative practices in health and social care services in Friuli‐Venezia Giulia, a region in which there is a significant orientation towards enhancing social citizenship and enforcing the central position of the public actor. We investigate how the dynamics of territorialization and personalization, implied by the programme, trigger specific logics and practices of activation. Finally, referring to this case study, we propose an analytical overview of some relevant issues in the development of ‘local active welfare’ in Italy. 相似文献
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Parenting interventions represent a means for experimentally inquiring socio‐emotional change of post‐institutionalized children after adoption. We used this approach in a three time point RCT study involving 83 post‐institutionalized children (Mage = 33.5 months, SD = 17.1) and their adoptive mothers (Mage = 42.6, SD = 3.9), attending either the Video‐Feedback Intervention to promote Positive Parenting in adoption and foster care or a dummy intervention. Controlling for gender and age at adoption, children showed a significant change in their socio‐emotional adjustment in the specific variables inquired—that is, emotional availability‐EA, and behavioral problems—after intervention attendance. Mediation and moderated mediation models showed that maternal EA was a main factor affecting children’s EA and externalizing behavioral problems, with a key moderating role played by children’s temperament; children with high scores on temperamental negative affect benefitted most from their mothers’ increase in EA. 相似文献
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