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241.
How Conditioning on Posttreatment Variables Can Ruin Your Experiment and What to Do about It 下载免费PDF全文
Jacob M. Montgomery Brendan Nyhan Michelle Torres 《American journal of political science》2018,62(3):760-775
In principle, experiments offer a straightforward method for social scientists to accurately estimate causal effects. However, scholars often unwittingly distort treatment effect estimates by conditioning on variables that could be affected by their experimental manipulation. Typical examples include controlling for posttreatment variables in statistical models, eliminating observations based on posttreatment criteria, or subsetting the data based on posttreatment variables. Though these modeling choices are intended to address common problems encountered when conducting experiments, they can bias estimates of causal effects. Moreover, problems associated with conditioning on posttreatment variables remain largely unrecognized in the field, which we show frequently publishes experimental studies using these practices in our discipline's most prestigious journals. We demonstrate the severity of experimental posttreatment bias analytically and document the magnitude of the potential distortions it induces using visualizations and reanalyses of real‐world data. We conclude by providing applied researchers with recommendations for best practice. 相似文献
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Ellen Katrine Kallander Bente Weimand Torleif Ruud Saul Becker Betty Van Roy Ketil Hanssen-Bauer 《Child & Youth Services》2018,39(4):228-249
Quantitative studies of children’s caring activities during parental illness have increased in the past 10 years. However, the various outcomes for these children have been investigated less frequently. In the present study, we investigate whether the children have different outcomes when the parent has a severe physical illness, mental illness, or substance abuse and whether any factors are associated with the positive and negative outcomes of the children’s caregiving. This was a cross-sectional, multicenter study. We recruited parents who were out- or inpatients in five public hospitals in Norway as well as their children. The sample included 246 children ages 8–18 and 238 of their parents with a severe physical illness, mental illness, or substance abuse. Ten percent reported negative outcomes at a clinical level of concern, and nearly half of the children reported stress. However, the outcomes were not significantly different across parental illness groups. Positive and negative outcomes were associated with the nature of caring activities (e.g., personal care, financial and practical management, household management), social skills, and perceived external locus of control. Health professionals must provide a more comprehensive and overall assessment of both the parents’ and the children’s needs. To recognize the role taken by the child, an assessment of children’s caring activities and their need for adequate information should be performed. In particular, should the children’s need for follow-up regarding caring activities, respite, and emotional support be assessed to secure their necessary skills and feeling of mastery. 相似文献
244.
Do tax officials use double standards in evaluating citizen‐clients? A policy‐capturing study among Dutch frontline tax officials 下载免费PDF全文
In line with psychological and economic discrimination theories, street‐level bureaucracy studies show a direct effect of citizen characteristics on officials' judgements, or show how street‐level bureaucrats employ stereotypical reasoning in making decisions. Relying on sociological double standards theory, this study hypothesizes that citizen‐clients' status characteristics influence officials' evaluations not only directly, but also indirectly and more pervasively by influencing the interpretation of other signals. By means of a policy‐capturing study among Dutch frontline tax officials, this study takes a first step in testing double standards propositions in the context of official–citizen encounters. The findings support only some hypotheses, but indicate that citizen‐clients' level of education could serve as a moderating context affecting the interpretation of cues. The article provides important theoretical and methodological guidelines for future research on stereotyping at the front line. 相似文献
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This article argues that the efforts of policy‐makers to avoid conflict in the short run can be counterproductive in the long run. Not only may policy‐makers fail to reap the benefits of conflicts when they try to steer clear, but conflict may actually increase rather than diminish. We study conflict through the conceptual lens of (de)politicization in the lengthy and highly contested policy‐making process over the multibillion‐euro ‘Oosterweelconnection’ highway in Antwerp (Belgium). An in‐depth media analysis of 739 articles is combined with data from 32 narrative interviews. We conclude that efforts to end public debate through depoliticization can have a boomerang effect, in which conflict disappears only temporarily, and that these efforts can ultimately increase conflict while wasting engagement and creativity. More attention to the productive aspects of conflict is needed in public administration literature and practice. 相似文献
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David Lowery Simon Otjes Sergiu Gherghina Arjen Van Witteloostuijn Gabor Peli Holly Brasher 《American journal of political science》2010,54(4):921-935
The standard model of political party system density combines two traditions to explain why some countries have more political parties than others, one tradition that emphasizes social cleavages and another that emphasizes electoral institutions, especially district magnitude. Despite its considerable success, there are several reasons to be less than fully satisfied with the standard model. We examine two of these problems associated with the scope of strategic voting and the functional form of the specification used to test the model. In doing so, we contrast the standard interpretation with an organizational ecology model that accounts for what the standard model did so well, but also accounts for important anomalies it ignores. We reexamine some of the key analyses that have been used to test the standard model to assess the severity of its limitations and the utility of the rival organizational ecology account. 相似文献
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