Economic Valuation of the Threat Posed by the Establishment of the Asian Tiger Mosquito in Australia

Invasive species policy could be better informed if we understood how much people value reductions in the risks posed by these organisms. This study investigates the public’s willingness to pay (WTP) for additional measures to reduce the risk of invasion of the Australian mainland by the Asian tiger mosquito (ATM). The study contributes to the literature by applying a stated preference method to estimate the public’s WTP to reduce the risk of an ATM invasion, expressed as a change in probability. It is the first ex ante invasive species analysis to test over two discrete invasion reduction probabilities based on management effort. Further, to overcome the challenges in valuing changes in probabilities, the study presented respondents with a well-defined discrete difference in the final probability, with one scenario reducing risk from 50 to 25% and the other from 50 to 5%. We find a significant difference in the mean WTP values between these two scenarios (A$67 vs. A$90). The overall conclusion is that estimated benefits of reducing the probability of an ATM incursion outweigh the costs.     

The role of uncertainty in the relationship between fairness evaluations and willingness to pay

Participants in contingent valuation studies may be uncertain about a number of aspects of the policy and survey context. The uncertainty management model of fairness judgments states that individuals will evaluate a policy in terms of its fairness when they do not know whether they can trust the relevant managing authority or experience uncertainty due to insufficient knowledge of the general issues surrounding the environmental policy. Similarly, some researchers have suggested that, not knowing how to answer WTP questions, participants convey their general attitudes toward the public good rather than report well-defined economic preferences. These contentions were investigated in a sample of 840 residents in four urban catchments across Australia who were interviewed about their WTP for stormwater pollution abatement. Four sources of uncertainty were measured: amount of prior issue-related thought, trustworthiness of the water authority, insufficient scenario information, and WTP response uncertainty. A logistic regression model was estimated in each subsample to test the main effects of the uncertainty sources on WTP as well as their interaction with fairness and proenvironmental attitudes. Results indicated support for the uncertainty management model in only one of the four samples. Similarly, proenvironmental attitudes interacted rarely with uncertainty to a significant level, and in ways that were more complex than hypothesised. It was concluded that uncertain individuals were generally not more likely than other participants to draw on either fairness evaluations or proenvironmental attitudes when making decisions about paying for stormwater pollution abatement.     

Willingness to Pay and Sensitivity to Time Framing: A Theoretical Analysis and an Application on Car Safety

Stated preference (SP) surveys attempt to obtain monetary values for non-market goods that reflect individuals’ “true” preferences. Numerous empirical studies suggest that monetary values from SP studies are sensitive to survey design and so may not reflect respondents’ true preferences. This study examines the effect of time framing on respondents’ willingness to pay (WTP) for car safety. We explore how WTP per unit risk reduction depends on the time period over which respondents pay and face reduced risk in a theoretical model and by using data from a Swedish contingent valuation survey. Our theoretical model predicts the effect to be nontrivial in many scenarios used in empirical applications. In our empirical analysis we examine the sensitivity of WTP to an annual and a monthly scenario. Our theoretical model predicts the effect from the time framing to be negligible, but the empirical estimates from the annual scenario are about 70 % higher than estimates from the monthly scenario.     

GROUP DECISION MAKING WITH UNCERTAIN OUTCOMES: UNPACKING CHILD–PARENT CHOICE OF THE HIGH SCHOOL TRACK

Predicting group decisions under uncertainty requires disentangling individual members' utilities over the consequences of choice, their expectations for uncertain outcomes, and their choice process as a group. I estimate simple Bayesian models of child–parent choice of high school track with subjective risk and unilateral or bilateral, nonstrategic decisions, by combining families' actual choices with novel survey information about children's and parents' subjective probabilities over choice consequences, their individually preferred choices, and their decision roles. A set of policy counterfactuals confirms the importance of introducing the beliefs and decision roles of individual members in models and policy analysis of group decisions.     

On Risk and Uncertainty,and Objective versus Subjective Probability

In this paper, we use the algebra to characterise decision‐makers’ representations of risk and uncertainty. We show that risk can be represented by objective probabilities on one part of the algebra, and that uncertainty can be represented by subjective probabilities on the other part. Decision‐makers are shown to maximise a generalised form of rank‐dependent expected utility. Their occasionally anomalous behaviour is discussed.     

What we could have learned from the New Deal in dealing with the recent global recession**

Modern policy-makers have learned little from the Great Depression and the policy responses of the 1930s. Yet, there is a great deal to learn from the New Deal: quelling the fear and uncertainty of mass unemployment in the pragmatic, experimental process through which the tool for achieving this objective—directed government expenditure—was accepted, even though the New Deal’s public works policies and direct provision of paid employment, rather than being informed by a Keynesian theory of macroeconomic stabilization, were designed to support morale, provide relief from the suffering and uncertainty of unemployment, and serve as a bulwark against more interventionist alternatives. Countering the deep uncertainty in the real sector of the economy thus collided with Roosevelt’s commitment to rein in fiscal deficits, and the resolution of this internal conflict in favor of support for employment and incomes provides the essential, largely ignored lesson of the 1930s.     

Subject pool effects among the general population and students: a choice experiment example

Rising costs of conducting research coupled with limited budgets are forcing researchers to use samples of convenience. Students represent one such sample, but are students an appropriate population? The objective is to ascertain how students’ willingness to pay (WTP) differs from the general public’s WTP. Students and county residents are surveyed. Results suggest the study’s goal may determine if student responses are generalizable to the general population. The samples are similar in many characteristics, but WTP amounts vary. The student samples show some inconsistencies. If the goal is general behavioural inferences, the results provide support for the use of students. If the goal is to estimate specific WTPs for use in policy analysis, the use of students may not be advisable.     

Event-Separability in the Ellsberg urn

Ellsberg??s three-color urn involves two distinct sources of uncertainty??the color composition of the urn (which is subjective) and the identity of the drawn ball (which is objective)??and bets on it can involve mixed objective/subjective uncertainty. It is known that typical betting preferences on this urn violate both the Sure-Thing Principle and probabilistic sophistication over its mixed uncertainty but are consistent with both of them over its purely subjective uncertainty. In this paper, we show that the standard Ellsberg-type preference reversal is actually implied by the Independence Axiom over its purely objective uncertainty.     

Respondent uncertainty in a contingent market for carbon offsets

The main objective of this paper is to provide additional empirical evidence of what explains respondent uncertainty in contingent valuation (CV) and how this in turn affects stated willingness to pay (WTP). Air travelers asked to pay a carbon travel tax to offset carbon emissions from flying were asked how likely it is that they will actually pay if the tax is voluntary. When changing the market compliance imperative from a mandatory carbon tax to a voluntary contribution, a third of all air travelers consider it unlikely they will actually pay their stated WTP amount. An ordered probit estimation approach is applied to identify the sources of respondent uncertainty. Besides the bid price, respondent sense of responsibility and belief in the effectiveness of the voluntary carbon market are among the main reasons for the experienced uncertainty.     

经济政策不确定性、银行集中度与银行风险

本文基于2007—2018年30家上市商业银行季度面板数据,首次针对不同方面的银行风险,采用固定效应模型详细探讨经济政策不确定性、银行集中度与银行风险之间的关系。研究结果表明：（1）经济政策不确定性会加剧银行经营风险和信用风险,但会降低银行风险承担;（2）银行集中度的上升会导致银行经营风险和信用风险上升,但对银行风险承担的作用不显著;（3）集中度在经济政策不确定性对银行风险的影响中具有调节效应,随着银行集中度上升,经济政策不确定性会更加剧银行经营风险和信用风险,且会进一步减弱银行风险承担。本文采用不同的银行集中度变量并涵盖多种银行风险衡量指标的实证结果均稳健。进而笔者基于实证结果,在银行风险防控方面对政策制定者及监管部门提出一些建议。     

Foreign Direct Investment and Technology Transfer Under Uncertainty in a Liberalizing Host Economy

This paper tackles the issue of investment and optimal ‘choice’ of market structure for a foreign multinational enterprise (MNE) in a newly liberalized economy under uncertainty and in the presence of sunk costs. A minimalist duopolistic model is developed whereby a foreign investor's subjective belief about the probability distribution of policy uncertainty is endogenized as a function of the aggregate output in the tradable goods sector. The main propositions derived from the model are consistent with some unconventional empirical findings in the literature on Foreign Direct Investment (FDI), technology transfer to and crowding out of domestic firms in LDEs.     

The macroeconomic impact of financial and uncertainty shocks

The extraordinary events surrounding the Great Recession have cast a considerable doubt on the traditional sources of macroeconomic instability. In their place, economists have singled out financial and uncertainty shocks as potentially important drivers of economic fluctuations. Empirically distinguishing between these two types of shocks, however, is difficult because increases in economic uncertainty are strongly associated with a widening of credit spreads, an indication of a tightening in financial conditions. This paper uses the penalty function approach within the SVAR framework to examine the interaction between financial conditions and economic uncertainty and to trace out the impact of these two types of shocks on the economy. The results indicate that (1) financial shocks have a significant adverse effect on economic outcomes and that such shocks were an important source of cyclical fluctuations since the mid-1980s; (2) uncertainty shocks, especially those implied by uncertainty proxies that do not rely on financial asset prices, are also an important source of macroeconomic disturbances; and (3) uncertainty shocks have an especially negative economic impact in situations where they elicit a concomitant tightening of financial conditions. Evidence suggests that the Great Recession was likely an acute manifestation of the toxic interaction between uncertainty and financial shocks.     

Macroeconomic equilibrium and welfare under simple monetary and switching fiscal policy rules

Using a standard forward-looking New Keynesian model, this paper investigates rational expectation equilibrium determinacy and macroeconomic performance of simple monetary policy rules under exogenous versus endogenous tax policies when there is tax uncertainty. Under the endogenous tax framework, we found: 1. responding to tax allows monetary policy to have control on the determinacy region, hence higher policy flexibility with respect to the fiscal policy conduct; 2. welfare improvement may come at the expense of cycling. The risk minimizing monetary policy behavior may become problematic since loss function values display huge variations depending on the probabilities given to future tax policy outcomes.     

DISPLAYING UNCERTAIN INFORMATION ABOUT PROBABILITY: EXPERIMENTAL EVIDENCE

Different from previous experiments that used three representations of uncertain information for probabilities: best estimate, interval and sets of probabilities, we use visual display to represent different levels of uncertainty through varying amount of probabilistic information provided to subjects. Results confirm that the individuals’ willingness to pay is higher when a larger amount of information is available. Further, individuals are found uncertainty averse for high probability of gain and uncertainty seekers for low probability of gain. Similarities in results across different representations of uncertainty indicate that the representation tested here is a viable method for communicating uncertainty to decision makers.     

EQUIVALENT OPTION PRICE WITH SUPPLY UNCERTAINTY

This paper compares two ex ante measures of the benefits of a project with supply uncertainty: compensating option price, the willingness to pay for a project, and equivalent option price, the willingness to accept to forego a project. The paper shows that compensating option price does not generally rank three or more projects correctly, even when the projects only impose a change in a single good. Equivalent option price, like equivalent variation with certain outcomes, always ranks three or more projects correctly. This paper also presents a method to empirically estimate equivalent option price using estimates of the benefits of certain changes. This approach is practically important so that the same study results can be used to estimate equivalent option price even as new projects are developed or as changes occur in the scientific information regarding the probabilities of various project outcomes. An application of the empirical method estimates the benefits of a policy to improve air and water quality when there is uncertainty about the effectiveness of the policy.     

A new approach to modeling decision-making under uncertainty

This paper presents two axiomatic models of decision making under uncertainty that avoid the use of a state space. The first is a subjective expected utility model with action-dependent subjective probabilities and effect-dependent preferences (the case of effect-independent preferences is obtained as a special instance). The second is a nonexpected utility model involving well-defined families of action-dependent subjective probabilities on effects and a utility representation that is not necessarily linear in these probabilities (a probabilistic sophistication version of this model, with action-dependent subjective probabilities is obtained as a special case). The hospitality of EUREQua, University of Paris 1, and financial support by the National Science Foundation grant SES-0314249 are gratefully acknowledged.     

政策不确定性如何影响企业绩效——一项基于Meta分析的检验

企业发展与宏观政策环境密不可分,关于政策不确定性与企业绩效的关系仍有诸多未解之惑。根据企业绩效的具体内容将其细分为企业经营绩效、创新绩效以及投资绩效,采用Meta分析方法,揭示政策不确定性对企业绩效3个方面的不同影响,并分析二者关系的调节因素。结果发现：政策不确定性能够抑制企业经营绩效和投资绩效,但能够显著提升企业创新绩效。由于存在企业性质、企业规模、市场化程度和政治关联等调节因素差异,导致政策不确定性与企业绩效关系研究存在分歧。结论能够为政策不确定性环境下企业创新发展战略实施提供借鉴,并为地方政府官员更替、公共政策制定等提供参考。     

An alternative interpretation of multiple bounded WTP data—Certainty dependent payment card intervals

This paper analyzes the multiple bounded format, in which uncertainty is directly incorporated into the WTP question. A new approach for analyzing multiple bounded uncertainty data is presented. The intuition underlying the approach is that uncertain individuals would like to state their WTP as intervals rather than precise values and that the width of the intervals is determined by the degree of uncertainty. The approach is compared to the one applied in Welsh and Poe [Welsh, M., Poe, G.L., 1998. Elicitation effects in contingent valuation: comparisons to a multiple bounded discrete choice approach. Journal of Environmental Economics and Management 36, 170–185] which treats uncertainty by conditioning responses on specific verbal probability statements. We argue that the conditioning approach overestimates mean and median WTP and that conditioning WTP estimates on probability statements like “probably” and “unsure” make them “fuzzy”. To empirically compare the two approaches we use data from 2004 concerning implementation of a predator protection policy in Sweden. Our analysis show that the suggested approach: (1) is more intuitive; (2) better fits the data; (3) estimates mean and median WTP with better precision; (4) is less sensitive to distributional assumptions; and (5) it is better suited for policy analysis.     

贸易自由化是如何影响我国出口产品质量的？*--基于贸易政策不确定性下降的视角

传统理论认为贸易自由化会促进出口产品的质量升级,但我国加入W TO后的情况却并非如此。文章基于贸易政策不确定性的视角,利用我国加入W TO前后美国对我国产品进行关税调整这一自然实验,通过倍差法分析了贸易自由化对我国出口产品质量的影响。研究表明：（1）在贸易自由化的过程中,贸易政策不确定性的下降会拉低我国的出口产品质量,且这一结论在改变质量测度方法、控制成本效应以及使用不同的产品属性、贸易对象和样本的情况下依然稳健;（2）贸易政策不确定性主要是通过广延边际上的质量调整降低了我国出口产品的总体质量,即在贸易政策不确定性下降幅度越大的产品中,有越多的生产低质量产品的企业进入出口市场;（3）在集约边际上,存续企业并未针对贸易政策不确定性的下降做出及时的产品质量调整,从而无法改变我国的产品质量在短期内下降的趋势。文章为我国如何在推行贸易自由化的同时实现出口产品质量升级提供了启示。     

Public willingness to pay for endocrine disrupting chemicals-free labelling policy in Korea

As public interest in health and safety grows, endocrine disrupting chemicals (EDC) have become an inevitable problem in society. One way to reduce the social cost of exposure to EDC is to grant a label certification to eco-friendly products that do not release EDC. The Korean government is considering introducing an EDC-free labelling policy. Therefore, our article tries to examine the public willingness to pay (WTP) for implementing the EDC-free labelling policy in Korea. For this purpose, a contingent valuation survey of 1000 Korean consumers was conducted in 2016. We used a one-and-one-half-bounded dichotomous choice question to elicit the WTP responses from the respondents. The mean of household WTP for the EDC-free labelling policy implementation is estimated to be KRW 2266 (USD 2.05) per year. When we expand the value to the whole country, it amounts to KRW 42.9 billion (USD 38.8 million) per year. These values are statistically meaningful at the 1% level and imply that the EDC-free labelling policy contributes to households’ utility and should be implemented immediately.