3,025 research outputs found

    What are the relations among stress perception, health perception and activity participation in school-aged children?

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    This correlational study examined possible relations among children’s activity patterns, perceived stress, and perceived health. A variety of self-report questionnaires were administered to a sample of 33 school age children. The Pediatric Activity Sort (PACS) was used to measure activity participation, a health questionnaire was used to assess health, and the Childhood Stress Questionnaire (CSQ) was used to measure perceived stress. Correlations showed no significant relationships between stress level and the amount of reported activity participation. The absence of significant relationships may be due to testing a sample of middle to upper class, Caucasian children, as there was a skewed CSQ dispersion with the majority of children reporting less stress than expected

    Can anticipatory feelings explain anomalous choices of information sources?

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    The well-being of agents is often directly affected by their beliefs, in the form of anticipatory feelings such as anxiety and hopefulness. Economists have tried to model this effect by introducing beliefs as arguments in decision makers' vNM utility function. One might expect that such a model would be capable of explaining anomalous attitudes to information that we observe in reality. We show that the model has several shortcomings in this regard, as long as Bayesian updating is retained. (c) 2005 Elsevier Inc. All rights reserved

    Mass Layoffs and Unemployment

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    Mass layoffs give rise to groups of unemployed workers who possess similar characteristics and therefore may learn from one another's experience searching for a new job. Two factors lead them to be too selective in the job offers that they accept. The first is an information externality: searchers fail to take into account the value of their experience to others. The second is an incentive to free ride: each worker would like others to experiment and reveal information concerning productive jobs. Together these forces imply that in equilibrium the natural rate of unemployment is too high.

    Search, choice, and revealed preference

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    With complete information, choice of one option over another conveys preference. Yet when search is incomplete, this is not necessarily the case. It may instead reflect unawareness that a superior alternative was available. To separate these phenomena, we consider non-standard data on the evolution of provisional choices with contemplation time. We characterize precisely when the resulting data could have been generated by a general form of sequential search. We characterize also search that terminates based on a reservation utility stopping rule. We outline an experimental design that captures provisional choices in the pre-decision period.Revealed preference, search theory, stochastic choice

    The Economics of Adjustment

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    In this paper we argue that many topics in macroeconomics can be viewed as part of the broader theory of the economics of adjustment. We argue that existing approaches to the economics of adjustment take a very narrow view of the role of information. We outline an approach to this topic that stresses the role of learning and information externalities, and discussed through examples how these concerns alter the qualitative nature of the adjustment process. In particular, there appears to be a general bias towards the underprovision of information in a variety of settings which leads to inefficient adjustment.

    The social discount rate

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    In welfare theory it is standard to pick the consumption stream that maximizes the welfare of the representative agent. We argue against this position, and show that a benevolent social planner will generally place a greater weight on future consumption than does the representative agent.Welfare

    User's manual for three dimensional boundary layer (BL3-D) code

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    An assessment has been made of the applicability of a 3-D boundary layer analysis to the calculation of heat transfer, total pressure losses, and streamline flow patterns on the surface of both stationary and rotating turbine passages. In support of this effort, an analysis has been developed to calculate a general nonorthogonal surface coordinate system for arbitrary 3-D surfaces and also to calculate the boundary layer edge conditions for compressible flow using the surface Euler equations and experimental data to calibrate the method, calculations are presented for the pressure endwall, and suction surfaces of a stationary cascade and for the pressure surface of a rotating turbine blade. The results strongly indicate that the 3-D boundary layer analysis can give good predictions of the flow field, loss, and heat transfer on the pressure, suction, and endwall surface of a gas turbine passage
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