对技术价值负载的伦理反思

在整个科技发展的过程中,人们对技术是否负载价值一直莫衷一是。但是随着技术特别是现代技术的发展,技术逐渐成为社会因素与科技因素渗透融合的产物,技术并非单纯意义上的价值中立。因此,我们应该对负载价值的技术加以深刻的伦理反思。通过这种反思来寻求实现技术与社会伦理协调发展的途径。     

Percepción del riesgo de la gripe A (H1N1) desde el “paradigma psicométrico”

Resumen

En la investigación de la percepción del riesgo, el paradigma psicométrico se ha venido aplicando, habitual-mente, para analizar la percepción de un gran número de riesgos, utilizándose, en este caso, para conocer cómo se percibe un solo riesgo: la gripe A (H1N1). En este estudio empírico se analiza la percepción que una muestra de estudiantes universitarios españoles (N = 326) tenía de esta epidemia cuando empezó a propagarse por el país. Tras la aplicación de un análisis de componentes principales sobre 17 características de la percepción del riesgo, se obtuvieron cuatro dimensiones: “poder catastrófico”, “amenaza”, “control” y “conocimiento”. Un análisis de regresión múltiple realizado posteriormente reveló que las dos primeras actúan como predictoras de la magnitud del riesgo que se atribuye a esta epidemia. Además, se observó que estas dos dimensiones y la magnitud del riesgo percibido estaban relacionadas positivamente con la realización de alguna acción protectora contra el contagio de esta enfermedad.     

A/H1N1 Vaccine Intentions in College Students: An Application of the Theory of Planned Behavior

Abstract

Objective: To test the applicability of the Theory of Planned Behavior (TPB) in college students who have not previously received the A/H1N1 vaccine. Participants: Undergraduate communication students at a metropolitan southern university. Methods: In January–March 2010, students from voluntarily participating communication classes completed a hardcopy survey assessing TPB and clinically significant constructs. Hierarchical regression equations predicted variance in vaccine intentions of students who had not received a flu shot (N = 198; 70% Caucasian). Results: The TPB model explained 51.7% (p < .001) of variance in vaccine intentions. Controlling for side effects, self-efficacy and perceived comparative susceptibility predicted intentions when entered in the first block, whereas attitudes, subjective norms, and perceived behavioral control significantly contribute when entered in the second block. Conclusions: For students who have not previously received a flu vaccine, vaccine communication should utilize self-efficacy and perceived comparative susceptibility to employ the TPB to promote vaccine intentions.     

PUBLIC DEBT UNDER LIMITED PRIVATE CREDIT

There is a conventional wisdom in economics that public debt can serve as a substitute for private credit if private borrowing is limited. The purpose of this paper is to show that, while a government could in principle use such a policy to fully relax borrowing limits, this is not generally optimal. In our economy, agents invest in a short‐term asset, a long‐term asset, and government bonds. Agents are subject to idiosyncratic liquidity shocks prior to the maturity of the long‐term asset. We show that a high public debt policy fully relaxes private borrowing limits and is suboptimal. This is because agents expecting such a policy respond by investing less than is socially optimal in the short asset which can protect them in the event of a liquidity shock. The optimal policy is more constrained and it induces a wedge between the technological rate of return on the long asset and the rate of return on bonds. In such a regime, agents subject to liquidity shocks are also borrowing constrained, and this expectation of being borrowing constrained induces them to invest the optimal level in the short asset.     

The ageing of society, health services provision and taxes

This paper investigates the outcome of ageing on taxes and hospitalisation of the elderly using panel data on 23 Swedish county councils 1980–1999. We test two hypotheses; whether a larger share of elderly has no negative effect on bed days per elderly person and no positive effect on tax rates. We reject the first hypothesis but fail to reject the second hypothesis. Further we cannot reject the hypothesis of a unitary elasticity of the share of elderly on bed days per elderly person. These results imply that the old bear the entire cost of adjustment when the population grows older.     

How does social security affect economic growth? Evidence from cross-country data

This paper investigates how social security interacts with growth and growth determinants (savings, human capital investment, and fertility). Our empirical investigation finds that the estimated coefficient on social security is significantly negative in the fertility equation, insignificant in the saving equation, and significantly positive in the growth and education equations. By contrast, the estimated coefficient on growth is insignificant in the social security equation. The results suggest that social security may indeed be conducive to growth through tipping the trade-off between the number and quality of children toward the latter.All correspondence to Junsen Zhang. We would like to thank the editor, two anonymous referees, Jim Davies, Frank Denton, Se-Jik Kim, and Mike McAleer for helpful comments and suggestions. Any remaining omissions and errors are the authors responsibility. Responsible editor: Alessandro Cigno.     

Fertility,growth and the financing of public education and health

This paper considers the implications of the financing of government services to children when fertility decisions are endogenously determined. In particular, it is shown that when the services are financed by taxation, the equilibrium outcome is biased away from the socially preferred result. The bias results in higher fertility rates and lower economic growth rates than the efficient social optimum. This arises because each household internalizes the benefits, but not the costs of the tax-financed services. We consider alternative methods of financing the public provision of services and find that a combination of taxation and vouchers can eliminate the bias in the equilibrium outcome.We are grateful for comments from Alessandro Cigno and two anonymous referees.     

THE BASIC PUBLIC FINANCE OF PUBLIC–PRIVATE PARTNERSHIPS

Public–private partnerships (PPPs) have been justified because they release public funds or save on distortionary taxes. However, the resources saved by a government that does not finance the upfront investment are offset by giving up future revenue flows to the concessionaire. If a PPP can be justified on efficiency grounds, the PPP contract that optimally balances demand risk, user‐fee distortions, and the opportunity cost of public funds has a minimum revenue guarantee and a revenue cap. The optimal contract can be implemented via a competitive auction with reasonable informational requirements. The optimal revenue guarantees, revenue sharing agreements, and auction mechanisms are different from those observed in the real world. In particular, the optimal contract duration is shorter in demand states where the revenue cap binds. These results also have implications for budgetary accounting of PPPs, as they show that their fiscal impact resembles that of public provision, rather than privatization.     

SCREENING DISABILITY INSURANCE APPLICATIONS

This paper investigates the effects of stricter screening of disability insurance applications. A large‐scale experiment was set up wherein two of the 26 Dutch regions caseworkers of the disability insurance administration were instructed to screen applications more stringently. The empirical results show that stricter screening reduces long‐term sickness absenteeism and disability insurance applications. We find evidence for direct effects of stricter screening on work resumption during the period of sickness absence and for self‐screening by potential disability insurance applicants. Furthermore, stricter screening improves targeting efficiency without inducing negative spillover effects on the inflow into unemployment insurance.     

FRAGILE STATES AND DEVELOPMENT POLICY

It is widely recognized that fragile states are key symptoms of under‐development in many parts of the world. Such states are incapable of delivering basic services to their citizens and political violence is commonplace. As of yet, mainstream development economics has not dealt in any systematic way with such concerns and the implications for development assistance. This paper puts forward a framework for analyzing fragile states and applies it to a variety development policies in different types of states.