21,584 research outputs found

    Informed Consent and Dual Purpose Research

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    The ethical treatment of human participants in psychological research is regulated by both federal guidelines and the ethical standards of the American Psychological Association (APA). Under certain circumstances, however, both APA standards and federal regulations allow for exceptions for informed consent. In spite of the possibility of exception, a number of factors have made it difficult to conduct and publish research that does not incorporate informed consent. The authors consider these factors and propose 2 approaches that may reduce reluctance to consider exceptions to informed consent under appropriate circumstances. First, journals should not rely on informed consent as the only method of screening research for the ethical treatment of human participants. Second, efforts must be made to work with institutional review boards and other units that review psychological research to ensure that their members are aware of the conditions under which informed consent is considered reasonable. Failure to consider ethical research without informed consent may have serious ethical consequences for research

    Principal Turnover in Illinois Public Schools, 2001-2008

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    Analyzes trends in turnover among public school principals in 2001-08 compared with 1987-2001, school-based and personal reasons for the moves, characteristics of their new positions, and the role of school accountability pressures. Examines implications

    An Examination of the Relationship Between Overall Efficiency and Farm Experience

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    This paper examines the relationship between overall efficiency and years of farm experience for a sample of Kansas farms. In addition to years of experience, overall efficiency is significantly related to farm size, percent of time devoted to farming, and percent acres owned.Farm Management,

    How Do Analyst Recommendations Respond to Major News?

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    We examine how analysts respond to public information when setting stock recommendations. We model the determinants of analysts’ recommendation changes following large stock price movements. We find evidence of an asymmetry following large positive and negative returns. Following large stock price increases, analysts are equally likely to upgrade or downgrade. Following large stock price declines, analysts are more likely to downgrade. This asymmetry exists after accounting for investment banking relationships and herding behavior. This result suggests recommendation changes are “sticky” in one direction, with analysts reluctant to downgrade. Moreover, this result implies that analysts’ optimistic bias may vary through time

    Vector and Axial Nucleon Form Factors:A Duality Constrained Parameterization

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    We present new parameterizations of vector and axial nucleon form factors. We maintain an excellent descriptions of the form factors at low momentum transfers, where the spatial structure of the nucleon is important, and use the Nachtman scaling variable xi to relate elastic and inelastic form factors and impose quark-hadron duality constraints at high momentum transfers where the quark structure dominates. We use the new vector form factors to re-extract updated values of the axial form factor from neutrino experiments on deuterium. We obtain an updated world average value from neutrino-d and pion electroproduction experiments of M_A = 1.014 +- 0.014 GeV/c2. Our parameterizations are useful in modeling neutrino interactions at low energies (e.g. for neutrino oscillations experiments). The predictions for high momentum transfers can be tested in the next generation electron and neutrino scattering experiments.Comment: 5 pages, 3 figures, to be published in EPJ

    LAND MARKET LIBERALIZATION AND WEALTH DIFFERENTIATED LAND ACCESS: PANEL EVIDENCE FROM HONDURAS AND PERU

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    We evaluate the impact of agricultural land market liberalization policies in Latin America by empirically examining the degree to which the reforms have broken down the dependence of operational area on owned area. We use panel data sets from Honduras and Peru to estimate the relationship between operational and owned land holdings for pre and post reform periods.Land Economics/Use,

    Monopolizing force?: police legitimacy and public attitudes towards the acceptability of violence

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    Why do people believe that violence is acceptable? In this paper we study people’s normative beliefs about the acceptability of violence to achieve social control (as a substitute for the police, for self-protection and the resolution of disputes) and social change (through violent protests and acts to achieve political goals). Addressing attitudes towards violence among young men from various ethnic minority communities in London, we find that procedural justice is strongly correlated with police legitimacy, and that positive judgments about police legitimacy are associated with more negative views about the use of violence. We conclude with the idea that police legitimacy has an additional, hitherto unrecognized, empirical property – by constituting the belief that the police monopolise rightful force in society, legitimacy has a ‘crowding out’ effect on positive views of private violence
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