What drives compliance? An application of the theory of planned behaviour to urban water restrictions using structural equation modelling

This article presents analysis of households’ intentions to comply with government constraints on the use of urban water, or so-called water restrictions. The data are drawn from Australian cities and was collected during a severe drought. Structural equation modelling is employed to operationalize constructs taken from the theory of planned behaviour and to answer important policy questions related to compliance. The modelled data support the view that attitudes, social norms and perceived behavioural control (PBC) have a positive and significant influence on intentions to comply. PBC has the strongest influence on intentions, suggesting policy directed at assisting households to meet regulatory criteria might be at least as effective as advertising expenditures aimed at shaping attitudes and norms. Importantly, intentions to comply are also shown to have a positive and significant influence on reported compliance behaviour.     

Estimation of the public benefits of urban water supply improvements in Ethiopia: a choice experiment

Improving existing drinking water supply services in developing countries depends crucially on available financial resources. Cost recovery rates of these services are typically low, while demand for more reliable services is high and rapidly growing. Most stated preference-based demand studies in the developing world apply the contingent valuation method and focus on rural areas. This study examines household Willingness to Pay (WTP) for improved water supply services in a choice experiment in an urban area in Ethiopia, a country with the lowest water supply coverage in Sub-Saharan Africa. The design of the choice experiment allows estimation of the value of both drinking water supply reliability and safety. The estimated economic values can be used in policy appraisals of improved supply investment decisions. Despite significant income constraints, households are willing to pay up to 80% extra for improved levels of water supply over and above their current water bill. Women and households living in the poorest part of the city with the lowest service levels value the improvement of water quality most. As expected, also averting behaviour and expenditures play an important role.     

Does attribute order influence attribute-information processing in discrete choice experiments?

The existing empirical evidence shows that both contingent valuation and discrete choice experiment (DCE) methods are susceptible to various ordering effects. However, very few studies have analysed attribute-ordering effects in DCEs, and no study has investigated their potential influence on information-processing strategies, such as attribute non-attendance (ANA). This paper tests for attribute-ordering effects and examines whether the order of attributes describing the alternatives affects respondents’ propensity to attend to or ignore an attribute. A split-sample approach is used, where one sample received a DCE version in which the positions of the first and last non-monetary attributes are switched across the sequence of choice tasks compared with the other sample. The results show that attribute order does not affect welfare estimates in a significant way under the standard assumption of full attribute attendance, thus rejecting the notion of procedural bias. However, the welfare estimates for the attributes whose order was reversed and the share of respondents who ignored them differ significantly between the two attribute-ordering treatments once ANA behaviour is accounted for in the estimated choice models. These results highlight the important role of information-processing strategies in the design and evaluation of DCEs.     

An evening at the theatre: using choice experiments to model preferences for theatres and theatrical productions

This article examines people's preferences and demand for live theatre. It investigates the preferences for people attending a regional theatre, Northern Stage in Newcastle, in relation to other live theatres they could attend, and in relation to the attributes of theatrical productions and ticket price. It uses a Stated Preference (SP), discrete choice experiment, to assess people's utility and Willingness To Pay (WTP) for the different attributes of theatrical productions. The model assesses the effect of the attributes of plays on choice; and the impact of Socio-Economic (SE) and demographic variables on choice and demand. Results reveal the heterogeneity of theatregoers’ tastes for different types of plays and ticket prices. The models reveal the significance of ‘reviews’ and ‘Word Of Mouth’ (WOM) opinions on plays, as the most important variables determining choice.     

选择实验理论及其在食品需求研究中的应用:文献综述

概述了选择实验理论及其应用,在此基础上对利用选择实验方法研究食品需求的国内外文献进行综述。得出结论:美国的此类研究主要聚焦于消费者对食品质量和安全属性的偏好和支付意愿方面;欧洲的此类研究除了关注消费者的食品质量和安全需求外,还关注转基因、动物福利等问题。提出后续基于此类方法的研究应进一步关注食品特定属性的变化对消费者或社会福利的影响以及由此导致的市场效应的评价,而消费者需求行为与食品生产者行为、政府角色的结合可作为未来研究的切入点,同时应将选择实验方法更多地应用于中国食品需求研究。     

Revealing Differences in Willingness to Pay due to the Dimensionality of Stated Choice Designs: An Initial Assessment

Stated choice (SC) methods are now a widely accepted data paradigm in the study of the choice responses of agents. Their popularity has spawned an industry of applications in fields as diverse as transportation, environmental science, health economics and policy, marketing, political science and econometrics. With rare exception, empirical studies have used a single SC design, in which the numbers of attributes, alternatives, choice sets, attribute levels and ranges have been fixed across the entire design. As a consequence the opportunity to investigate the influence of design dimensionality on behavioural response has been denied. Accumulated wisdom has promoted a large number of positions on what design features are specifically challenging for respondents; and although a number of studies have assessed the influence of subsets of design dimensions, there exists no single study (that we are aware of) that has systematically varied all of the main dimensions of SC experiments. This paper reports some initial findings on what influences, in aggregate, specific design configurations have on the mean willingness to pay for specific attributes using a Design of Designs (DoD) SC experiment in which the ‘attributes’ of the design are the design dimensions themselves. The design dimensions that are varied are the number of choice sets presented, the number of alternatives in each choice set, the number of attributes per alternative, the number of levels of each attribute and the range of attribute levels. The empirical evidence, using a sample of respondents in Sydney choosing amongst trip attribute bundles for their car commuting trip, suggests that, within the boundaries of design dimensionality investigated, mean estimates of WTP for travel time savings in the aggregate cover a range that is appropriate for reporting a global mean and a set of meaningful values for sensitivity testing in project appraisal and demand prediction. When these aggregated mean estimates are conditioned on all design dimensions we do not find any systematic differences due to specific design dimensions; however when each design dimension is assessed without controlling for the other dimensions we find evidence to support differences in aggregate mean WTP attributable to the number of attributes per alternative and the number of alternatives in a choice set. Research funded under the Australian Research Council Large Grants Scheme, Grant A00103962.     

What are the consequences of ignoring attributes in choice experiments? Implications for ecosystem service valuation

This paper investigates the sensitivity of choice experiment values 3AL for ecosystem services to ‘attribute non-attendance’. We consider three cases of attendance, namely that people may always, sometimes, or never pay attention to a given attribute in making their choices. This allows a series of models to be estimated which addresses the following questions: To what extent do respondents ignore attributes in choice experiments? What is the impact of alternative strategies for dealing with attribute non-attendance? Can respondents reliably self-report non-attendance? Do respondents partially attend to attributes, and what are the implications of this? Our results show that allowing for the instance of ‘sometimes attending’ to attributes in making choices offers advantages over methods employed thus far in the literature.     

Analysing rationing policies: drought and its effects on urban users’ welfare (Analysing rationing policies during drought)

The aim of this paper is to study the impact on consumers of rationing policies implemented during water shortages. Water scarcity gives rise to the need for rationing, and various methods, including supply cutoffs, can be used. A model is devised to quantify the welfare losses associated with qualitive and quantitive restrictions. Based on virtual prices and using the consumer surplus as a welfare measurement, welfare variations for different users have been calculated. To achieve the aim, information relative to Seville (Spain) has been used, analysing the drought period that took place in the first half of the 1990s. It has been possible to observe the main source that led to welfare losses for each kind of user.     

HETEROGENEITY IN WILLINGNESS‐TO‐PAY FOR THEATRE PRODUCTIONS: INDIVIDUAL SPECIFIC WILLINGNESS‐TO‐PAY ESTIMATES FOR THEATRES,SHOWS AND THEIR ATTRIBUTES

This paper investigates people's preferences for live theatre, and heterogeneity in willingness‐to‐pay (WTP). A stated preference discrete choice model estimates utility and WTP for different attributes of theatre productions. Previous studies assumed fixed coefficients across all theatre‐goers. This study allows coefficients of attributes to vary across individuals in the population, providing information on the heterogeneity of tastes. Theatre‐goers' choices are used to estimate individual‐based parameters for a person's tastes in theatre productions. The analysis reveals the heterogeneity of tastes for different types of plays and ticket price; and the significance of ‘reviews’ by critics and ‘word of mouth’ opinions as important variables determining choice.     

Water Security and Irrigation Investment: Evidence from a Field Experiment in Rural Pakistan

This study examines the relationship between water security features and irrigation investment using data from a field survey with a choice experiment conducted in rural Pakistan. Our results generally support Besley’s framework on the link between property right and investment incentive with an application to irrigation, although not all aspects of water security features can significantly affect farmers’ investment in irrigation. Investment increases significantly with groundwater share, but there is insufficient evidence to support that farmers’ investment is significantly and positively affected by surface water reliability. Farmers who own land or who are located further down the watercourse tend to invest more than their peers do. Existing conditions on surface water reliability significantly affect this relationship. Overall, groundwater use dominates the decision-making of investment and the role of surface water source in securing irrigation water is relatively weak from a farmer’s perspective.     

A field experiment to estimate the effects of anchoring and framing on residents’ willingness to purchase water runoff management technologies

Watersheds throughout the world have been severely polluted by nutrient-laden runoff that comes from industrial, agricultural, and residential sources. Efforts to reduce this runoff have focused on industrial and agricultural sources, while little attention has been paid to encouraging residents to reduce runoff from their properties. To study residents’ willingness to adopt landscaping practices that reduce runoff, we conducted a field experiment in the Delaware River watershed. In the experiment, over three hundred adults participated in a series of random-price auctions that revealed their willingness to pay (WTP) for five products that reduce nutrient runoff. To study how WTP can be influenced by attributes of the choice architecture, we randomized the starting bid values (anchors) and the way in which the external benefits of the five practices were framed. Compared to a neutral framing, a positive framing (using the product can improve water quality) increased average WTP by about one-third, while the estimated effect of a negative framing (failing to use the product can worsen water quality) was also positive, but smaller and not statistically different from zero. The estimated effect on average WTP from the anchor depends on how bids of $0 are modeled, but the results imply that higher anchors lead to higher WTP. Although we believe the magnitudes of our results should be considered suggestive and we recommend replications with higher statistical power, the results add to the evidence base that environmental programs can achieve policy-relevant gains in program performance through a series of small changes to the decision environment.     

Low-income fishermen's willingness-to-pay for fisheries and watershed management: An application of choice experiment to Lake Tana,Ethiopia

In this paper, choice experiment was applied for valuation of Lake Tana's fishery and watershed. Two attributes — fishing control and lake side plantation — were identified as relevant attributes for the choice experiment. A monetary attribute — payment for fishing permit was also included. Multinomial and random parameter logit models were used for estimation. All the attributes included were significant factors in affecting the probability of choosing an alternative scenario. The results suggest that fishermen were more concerned about fishing control as reflected by the higher value they give to fishing control than lake side plantation. Household income, years of education, and family size were found to be significant. The economic welfare measures we calculated for two scenarios show that fishermen were willing to pay 57 birr (US$5.3)) per month for a moderate improvement scenario and 93 birr (US$8.6) per month for an aggressive scenario for the two attributes.     

Crises and structural change in Australian agriculture

We present a model of structural change in the farming sector in which natural and economic crises decrease farmers’ work satisfaction, farm profitability, and the decision to stay in farming. Using data from the Australian Regional Well-being survey, activity choice modeling, and a structural equation approach, we test the hypothesis that these crises-induced effects then cause structural change in Australian agriculture. We find that external shocks, such as drought or economic downturn, negatively affect farmers’ welfare, which in turn causes structural change through revised activity choices. Our empirical findings also indicate that specific adjustment strategies such as buying additional water titles or reducing input use are insufficient to mitigate adverse crises effects.     

Patients, Doctors and Contracts: An Application of Principal-Agent Theory to the Doctor-Patient Relationship

The doctor-patient relationship has been the main focus of principal-agent theory in health care. This paper focuses on communication between doctors and patients within the doctor-patient relationship as a method by which the utility of the principal (patient) can be maximised. Patients' preferences for various attributes of the doctor‐patient relationship are examined using a discrete choice experiment. Individuals were presented with pairs of hypothetical scenarios describing GP visits that differed depending on the attributes of the doctor-patient relationship. In the time-constrained GP consultation, the results show that being able to talk to the doctor is the most important attribute, followed by patients' understanding of the doctor's explanations, waiting time for an appointment, and the amount of information transferred to the patient. Quality of information is more important than its quantity. The extent to which patients were involved in decision making had no influence on the choice of visit, although it was important to patients who were relatively young and female. Policies aimed at involving patients in decision making should be targeted at specific groups of patients only. The results have implications for the training of doctors in communication skills as a response to market failure caused by asymmetry of information.     

Looking backward to look forward: water use and economic growth from a long-term perspective

Recent research has examined the relationship between natural resources and economic growth. Considered vitally important, not only for humanity’s well-being but also for the integrity of the ecosystem, the relationship between water use and economic growth has nevertheless traditionally attracted little attention by analysts. This article studies water use trends from 1900 to 2000 throughout the world and their relationship to the main determinants of economic growth. To do this, we first analyse water use trajectories. Second, to proceed with the determinants of water use, we reformulate the Ehrlich and Holdren’s impact, population, affluence, technology (IPAT) equation (1971), decomposing water use trends into changes in economic demands and in water use intensity on the basis of a decomposition analysis. Finally, a simple scenario analysis is conducted, to project future water use trends under different economic, demographic and technological assumptions.

?The empirical evidence shows that economic and population growth have been crucial in explaining the increase in water use over the past 100 years, with significant regional differences. Nevertheless, the decline in water use intensity has been responsible for a significant reduction in the growth of total water use.     

Preferences with and without prices - does the price attribute affect behavior in stated preference surveys?

The experimental as well as the non-market valuation literature include several examples of how an introduced price can affect behavior in otherwise not expected ways. It has become standard to include a price vector as an attribute in choice experiments, something that enables us to estimate a marginal willingness to pay for other attributes. We test the impact on preferences by an inclusion of a price in a choice experiment. Preferences are affected, as might be expected. However, also the relative ranking of individual attributes is affected.      

水资源利用市场化下的水权及其类型化探讨

水资源利用市场化的前提是建立水权制度。水权是单位或个人对一定之水的使用收益权。水资源具有多用性,对水资源利用的目的和方式不同,水权内容也就存在差异。水权类型化不仅便于明确各类水权主体的权利和义务,而且便于国家对水资源开发利用的管理,促进水资源的合理利用。     

淮北平原农用地下水应急水源建设研究

淮北平原是安徽省粮食主产区,干旱是影响该地区农业生产的主要气象因素,制约着该地区的农业稳产增产。由于降水、地表水时空分布不均,难以有效应对重特大气象干旱;而埋藏浅、就地可采、资源丰富的浅层地下水则是最好的应急水源。文章通过分析淮北平原浅层地下水的赋存条件和资源特征,提出了浅层地下水库的理念,并着重强调了浅层地下水库的调节功能。根据农用地下水的开采现状,以及应对气象干旱的农业供水要求,有针对性地提出了浅层地下水开发利用的对策与建议。     

Maintaining the Common Pool: Voluntary Water Conservation in Response to Varying Scarcity

Studies of voluntary conservation response to changing information about an environmental problem have traditionally been synonymous with studies of information campaign effectiveness. As such, they have not been able to capture the response to actual changes in the environment. This paper takes a novel approach to identifying voluntary conservation by studying the impact of changing storage levels on urban water usage in the context of a prolonged drought and a highly ’water aware’ community. Our results suggest that voluntary conservation increases substantially when water is scarce and the public value of the savings is greatest. We discuss the implications of these findings for our understanding of environmental information campaigns in general, and urban water demand management in particular.     

Should Reference Alternatives in Pivot Design SC Surveys be Treated Differently?

Analysts are increasingly making use of pivot style Stated Choice (SC) data in the estimation of choice models. These datasets often contain a reference alternative whose attributes remain invariant across replications for the same respondent. This paper presents evidence to suggest that respondents react differently to the attributes of these reference alternatives and those of purely hypothetical alternatives. While some such evidence has been reported in the existing literature, this paper goes further and details a number of different departures from a common treatment of the two types of alternatives, relating both to the observed part of utility and the error term.