Hyperbolic discounting and the standard model: Eliciting discount functions

Experiments on static intertemporal choice find evidence of particularly extreme impatience toward immediate rewards. While this is often taken as support for hyperbolic discounting, it could also arise because the most likely participants in experiments may be those with the most immediate need for money. We conduct a calibration exercise and find that the extreme impatience observed in experiments can be accommodated by a standard exponential discounting model with no discounting and expectation of a ‘small’ increase in the base consumption level. The calibration uses existing estimates of curvature of utility.     

Empirical and public choice evidence for hyperbolic social discount rates and the implications for intergenerational discounting

The derivation of the correct discount rate for intergenerational projects in Cost Benefit Analysis is particularly contentious. Public choice has resulted in lower discretionary exponential discount rates for many intergenerational projects in Britain and the USA. This is shown to be strong indirect evidence that the true social discount rate may be a hyperbolic (rather than an exponential) function. There is also empirical evidence for this hypothesis. The hyperbolic nature of discounting is also a standard finding in the behavioural sciences. For intergenerational time frames hyperbolic discount rates should be employed together with exponential discount rates in cost-benefit sensitivity analyses.Sincere thanks to Maureen Cropper and Paul Portney for supplying their survey results and to Elaine Barrow and Phillip Judge for graphics assistance. Two anonymous referees also provided valuable comments.     

Intertemporal substitution and the liquidity effect in a sticky price model

The liquidity effect, defined as a decrease in nominal interest rates in response to a monetary expansion, is a major stylized fact of the business cycle. This paper first confirms that, with separable preferences, a low degree of intertemporal substitution in consumption is a necessary condition for the existence of the liquidity effect. In contrast to this result, in a model with non-separable preferences and capital accumulation it takes an implausibly high elasticity of intertemporal substitution to produce a liquidity effect. The robustness of these results to alternative degrees of nominal rigidities, capital adjustment costs and stochastic monetary processes is also analysed. We conclude that price stickiness, by itself, does not guarantee the existence of a liquidity effect.     

Optimal choice of prevention and cure under uncertainty on disease effect and cure effectiveness

This paper studies optimal prevention and cure when an agent copes with two different sources of uncertainty: uncertainty on disease effect and uncertainty on cure effectiveness. We first analyze how optimal choices are affected by uncertainty when prevention and cure do not interact. Under both types of uncertainty, we obtain that the optimal level of prevention rises. Furthermore, we characterize for each source of uncertainty the conditions for the optimal level of cure to increase. We show that these conditions are related to different measures of prudence in health and cross-prudence in wealth. Lastly, we generalize our results to the case where prevention and cure interact and characterize for each source of uncertainty the conditions for the optimal level of prevention and cure to jointly increase. These conditions are similar to those obtained in the case without uncertainty but, in this context, Edgeworth–Pareto complementarity is also required.     

The endowment effect and the reference state: Evidence and manipulations

Recent reports suggest that the “endowment effect” may be due to conditions under which it is observed and explained by incentives long recognized in standard theory. Evidence from new experiments, reported here, provides empirical support for the role of the economic environment on people's perceived reference state and consequently on their valuations, as suggested by Köszegi and Rabin [Köszegi, B., Rabin, M., 2006. A model of reference-dependent preferences. Quarterly Journal of Economics 121, 1133–1165], and indicates that the disappearance of the valuation disparity is more likely due instead to conditions that weaken the perception of reference states. Further, these conditions appear to be poor approximations of those that prevail in most cases for which valuations are normally made.     

Combining stated and revealed choice research to simulate the neighbor effect: The case of hybrid-electric vehicles

According to intuition and theories of diffusion, consumer preferences develop along with technological change. However, most economic models designed for policy simulation unrealistically assume static preferences. To improve the behavioral realism of an energy–economy policy model, this study investigates the “neighbor effect,” where a new technology becomes more desirable as its adoption becomes more widespread in the market. We measure this effect as a change in aggregated willingness to pay under different levels of technology penetration. Focusing on hybrid-electric vehicles (HEVs), an online survey experiment collected stated preference (SP) data from 535 Canadian and 408 Californian vehicle owners under different hypothetical market conditions.Revealed preference (RP) data was collected from the same respondents by eliciting the year, make and model of recent vehicle purchases from regions with different degrees of HEV popularity: Canada with 0.17% new market share, and California with 3.0% new market share. We compare choice models estimated from RP data only with three joint SP–RP estimation techniques, each assigning a different weight to the influence of SP and RP data in coefficient estimates. Statistically, models allowing more RP influence outperform SP influenced models. However, results suggest that because the RP data in this study is afflicted by multicollinearity, techniques that allow more SP influence in the beta estimates while maintaining RP data for calibrating vehicle class constraints produce more realistic estimates of willingness to pay. Furthermore, SP influenced coefficient estimates also translate to more realistic behavioral parameters for CIMS, allowing more sensitivity to policy simulations.     

Matthew effect,capabilities and innovation policy: the Argentinean case

The purpose of this paper is to test the presence of Matthew effects in different types of public funding for innovation – non-refundable grants, subsidized loans and tax credits. According to the literature, Matthew effect refers to the impact of past accessing to public funds on reputation, which increases the probability of accessing in the present. The dataset is made of 966 firms that accessed the Technological Argentinean Fund (FONTAR), main instrument to foster innovation in Argentina, during 2007–2013 – 3300 observations. Results confirm the existence of Matthew effects: past accessing to FONTAR increases the probability of accessing in the present, but only when different instruments are taken altogether. Then, Matthew effect is positively associated with the diversification of access to promotional instruments rather than the repeated access to one type of funding tool. Additionally, results show that firm’s innovation investments, R&D activities, and human resources, explain the increase in probability of accessing, which provides evidence regarding the presence of capability effects. All of this suggests that once the firm enters the system of public funding, it remains with an active innovative behaviour, not just because of reputation effects, but because it has accumulated capabilities in the pursuit of a technological advantage.     

新疆新型农民科技培训效果调查分析

传统农民忽视科技培训,已经不能适应现代农业发展的需要。通过对新疆典型地区的调查分析,可以了解新疆新型农业科技培训的基本现状;可以看到,通过培训,农民收入增加,农村组织化程度等方面也有显著提高。     

Focusing effect and the poverty trap

I build a dynamic consumption-savings model in which agents׳ choices are distorted by the focusing effect: agents overweight the utility of goods in which their options differ more. I show that the consumption-savings choice depends both on the marginal return on savings and on the total return on savings, implying that the incentive to save may increase with the initial level of wealth. As a consequence, a salience-based poverty trap may exist when the marginal return on savings is sufficiently high and sufficiently flat. I also consider the case of a perfect credit market and show that a poverty trap may emerge when the salience of consumption is bounded above. I discuss policy implications. In particular, imposing upon an agent a punishment for decreasing savings below a threshold leads to a higher level of savings, even when the threshold triggering the punishment is not binding     

慈善捐赠税收激励原理及效应探析

慈善捐赠被视为调节贫富差距的平衡器,税收政策是国家直接掌握的刚性调节手段,世界各国都制定相应的税收政策激励慈善捐赠。运用税收政策促进慈善捐赠主要基于弥补公共品政府缺位、有限政府理论和帕累托改进理论。税收政策通过改变慈善捐赠的相对价格产生的收入效应和替代效应,促进捐赠数额的增加。     

Near unit root and the relationship between inflation and interest rates: A reexamination of the Fisher effect

Tests of the Fisher effect are plagued by high persistence in interest rates. Instead of standard regression analysis and asymptotic results, methods relying on local-to-unity asymptotics are employed in testing for the Fisher effect with monthly U.S. data covering the period 1953:1–1990:12. These procedures are extensions of a recently presented method (Cavanagh, Elliott and Stock (1995)) based on simultaneous confidence intervals, and they have the advantage of being asymptotically valid whether interest rates are integrated of order one or zero, or near unit root processes. Taking appropriately account of the near unit root problem the findings in most of the previous literature are reconfirmed. There is support for the Fisher effect in the interest rate targeting period (1953:1–1979:10) of the Federal Reserve but not in the 1979:11–1990:12 period. First version received: July 1999/Final version received: April 2000     

The late take-off phenomenon in the diffusion of telecommunication services: network effect and the critical mass

Telecommunication services are distinctive in that their adoptions are influenced by network effect resulting in the late take-off phenomenon and the critical mass problem. In this paper we examined the late take-off phenomenon in the diffusion process of telecommunication services. We first compared the parameters of the diffusion process of consumer durables with those of fax services in the US and Korea. By analyzing the parameters of a new diffusion model based on the threshold model proposed by Markus, we found that the late take-off phenomenon resulted from the low heterogeneity of the threshold distribution for the potential adopters. A simulation approach was proposed for the theoretical implication of the critical mass problem in the start-up telecommunications services.     

Testing for a unit root in the presence of stochastic volatility and leverage effect

Previous studies have shown that the stationary and nonstationary time-varying volatilities have different implications on the unit root test. In this paper, we provide a Bayesian unit root test for an AR(1) model with stochastic volatility and leverage effect. Monte Carlo simulations show that the proposed Bayesian unit root test statistic achieves good finite sample properties and is robust to the stationarity of stochastic volatility.     

论外资银行进入效应与银行业开放的保护策略

随着2007年WTO过渡期的结束，外资银行将以更快的速度进入我国。外资银行的进入，在促进我国经济快速发展的同时，也带来了不容忽视的金融安全问题。为此，应对外资银行进入的宏微观效应进行评估，并运用理论模型，分析外资进入的替代效应与进入后的监管信息约束效应。面对银行业的全面开放，在我国银行业竞争力相对较弱的现实情况下，为避免外资银行进入对我国银行业造成过度损害，有必要采取相应的保护策略。     

As times goes by. A dynamic impact assessment of the innovation policy and the Matthew effect on Argentinean firms

ABSTRACT

The objective of this paper is to analyse the impact of public funds for innovation on firm’s capabilities, innovative dynamics and economic performance. A large stream of literature about the evaluation of public funds is focused on testing the existence of additionality effects on investments and results. This paper aims to provide evidence about other dimensions of the firm that public policy can alter, with focus on the time window between the treatment and the impact, and the role of the Matthew effect (recurrence) in this process. The empirical exercise is based on a dynamic panel data made of 1465 firms (3337 observations) that applied to the Argentinean Technological Fund (FONTAR), which is the main public fund for innovation in Argentina, between 2007 and 2016. Results show short-term effects of accessing to FONTAR on firms’ capabilities, medium-term effects on innovation efforts and long-term effects on productivity. Even though the effect on productivity is larger among recurrent firms, the differences among recurrent and non-recurrent firms are not conclusive in case of capabilities and innovation efforts. All in all, this research provides evidence about the ‘when’ of public policy and the need to look beyond input additionality effects when analysing its impact.     

Assessment of the immigration effect and choice of development pattern for scenic areas： a case study of Wuyi Mountain, China

Mountainous regions face a series of Conflicts betWeen the natural resources conservation and the economic development, especially in protected areas, where are the home to some of the poorest people in＇the world In China, the Protected Areas Authorities （such as Protected Areas Authorities of Wuyi Mountain） transferred the mountainous people out of the protected areas. We found that it is not a good approach of immigration project, as fal economic and ecological effect is concerned. Although remote and majestic, beauty attracted many tourists, mass tourism is not a good approach to soh,e the development problem in mountainous areas because it can not provide enough opportunites to make local people live a comfortable life, and the high volume of tourists indicates that the resources, face significant threats. Because many fandscapes,are run by Private enterprises, local residents and government only get limited benefits. Alihough ecotourism principles expatiate on economic development and resource, onservation, local people income and tourists feelings, it has discordance between the theory and the praciice Therefore. the term of ＂integrated ecotourism ＂ was coined in the paper.based on the ecotourism theory, Integrated ecotourism means a broadly tourism resources and pendulum spatial pattern which will come into being with the movement of local,people and tourists from protected areas io the nearby town or city： and it also tries to solve the property right conflict of mountain land between the local people and the private enterprises according to property right theory.     

The global business revolution, the cascade effect, and the challenge for firms from developing countries

The global business revolution since the 1980s has witnessedan unprecedented degree of industrial consolidation and concentrationof business power at a global level. Firms with powerful, globallyrecognised technologies and/or brands constitute the ‘systemsintegrators’ at the apex of extended supply chains. Thispaper examines the supply chains in four different sectors:aerospace, telecommunications, automobiles and beverages. Itfinds that these sectors have striking similarities in the wayin which the core systems integrators have stimulated industrialconcentration across the whole supply chain. This ‘cascadeeffect’ has profound implications for firms from developingcountries in catching up at the firm level.     

Reputation and the league standing effect: the case of a split season in minor league baseball

Split season league design resets standings at the midpoint of the season, thus allowing for two periods in which a team can potentially achieve success in a single season. This context allows us to test both the reputation of the first half winner and the league standing effect on demand. Examination of game-level data from the 2010 Southern League reveals fans are unaffected by measures of both team quality and league standing in the second half of the season. On the other hand, the first half winners saw an 11% increase in attendance as a percent of stadium capacity, suggesting that in the second half of the season winners matter more than winning.