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The lottery payoff procedure does not successfully induce risk-neutral bidding behavior in first-price, sealedbid auctions. This conclusion follows from both ordinary-least-squares estimation with natural data and leastabsolute-deviation estimation with transformed data from numerous experimental designs. Lottery payoffs do not succeed in inducing behavior predicted from standard expected utility theory assumptions or from assumed utility from winning and/or income thresholds. In contrast, first-price auction experiments with monetary payoffs yield results that are consistent with general models of bidding in the independent private values information environment.  相似文献   
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Results from a community survey in a sample of high-unemployment census tracts in southeastern Michigan showed significant elevations of depression, anxiety, somatization, and self-reported physical illness among the currently unemployed. These adverse effects were largely reversed by reemployment. Subsequent analyses documented modifying effects of social support, self-concept, and coping. We also found two mediating processes that account for the overall effects of current unemployment: (a) the intervening effects of financial strain, and (b) an influence of unemployment in creating heightened vulnerability to other stressful life events. The implications of these results for the design and implementation of preventive interventions are briefly discussed.  相似文献   
295.
PROSTITUTES' RIGHTS IN THE UNITED STATES:   总被引:1,自引:0,他引:1  
The prostitutes' rights campaign emerged in the early 1970s with the formation of COYOTE in San Francisco and affiliated movement organizations. This study examines the movement's major claims and goals, resource problems, and impact on public opinion, legislation, and law enforcement. The failure to attain key movement goals is explained in terms of chronic deficiencies of material and human resources that might compensate for the campaign's lack of moral capital and enhance its prospects for success.  相似文献   
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Clinical social workers are being increasingly recognized as qualified providers entitled to reimbursement under health insurance plans. This requires that the professional become acquainted with the practical aspects of health insurance coverage, billing procedural codes diagnostic codings, and other, aspects entailed in obtaining third-party health insurance reimbursement.  相似文献   
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This paper examines the implications of the standard Heckman (Heckit) correction for selectivity bias in wage and earnings functions that are subsequently used in wage decompositions. Even when justified, Heckit selectivity correction introduces some fundamental ambiguities in the context of wage decompositions. The ambiguities arise from group differences in the selection term which consists of a parameter multiplied by the Inverse Mills Ratio (IMR). The parameter is identified as the product of the standard deviation of the errors in the wage equation and the correlation between the wage equation error and the selection equation error. How should group differences in these parameters be interpreted in terms of structural differences and endowment effects? The same issue arises with respect to group differences in the IMR which reflect nonlinear group differences in the determinants of selection and in the probit coefficients.  相似文献   
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Numerical approximations are often used to implement the Bayesian paradigm in analytically intractable parametric models. We focus on embedded integration rules which are an attractive numerical integration tool and present theoretical results which justify their use in a Bayesian integration strategy.  相似文献   
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The present article delineates the parallel and complex processes of integration and disintegration under way in both Eastern and Western Europe. By drawing attention to the interrelatedness and consequent long‐ranging implications of these transformational processes, the author calls for a re‐evaluation of the role of Western aid to Eastern Europe as well as of that of the intellectuals.  相似文献   
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