Graduate School for International Development and Cooperation, Hiroshima University, Japan; Department of Urban and Regional Planning, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia.
Department of Urban and Regional Planning, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia.
Waste Manag. 2019 Apr 15;89:322-335. doi: 10.1016/j.wasman.2019.04.015.
Information strategies are increasingly used to promote pro-environmental behavior through changing perceptions, knowledge, awareness and norms. While some studies have argued that information strategies are ineffective, others have reported, that information strategies can have immediate impacts. Information strategies are particularly relevant in developing countries such as Indonesia because of their low-cost and immediate impact. The objective of this paper is to compare the impacts of pecuniary and non-pecuniary information on stated preferences and willingness to pay (WTP) for an improved waste collection and disposal program. Stated preferences were elicited by using a randomized conjoint field experiment. The information treatments were in the form of posters and were randomly assigned to the respondents. Among the seven attributes used in the conjoint analysis, the separation of non-organic waste and recycling as an intermediate processing technology had significant positive effects on the rate of support. Moreover, pecuniary information was found to directly influence household preference for payment for an improved waste collection and disposal program while affecting none of the other design elements of waste management services. In the reference case in which the no information treatment was applied, the lower bound of the mean WTP for marginalized improvements in a waste collection and disposal program was estimated to be USD 14.65. The study also found that pecuniary information increased WTP by 20.5%, whereas non-pecuniary information had a negative but statistically insignificant effect on WTP.
信息策略越来越多地被用于通过改变观念、知识、意识和规范来促进有利于环境的行为。虽然一些研究认为信息策略无效，但也有研究报告称，信息策略可以产生即时影响。信息策略在印度尼西亚等发展中国家尤为重要，因为它们成本低、见效快。本文旨在比较金钱和非金钱信息对改善垃圾收集和处理计划的表述偏好和支付意愿（WTP）的影响。通过随机联合实地实验来获得表述偏好。信息处理以海报的形式呈现，并随机分发给受访者。在联合分析中使用的七个属性中，将非有机废物和回收作为中间处理技术进行分离对支持率有显著的积极影响。此外，金钱信息被发现直接影响家庭对改善垃圾收集和处理计划的支付意愿，而对垃圾管理服务的其他设计要素没有影响。在应用无信息处理的参考案例中，估计垃圾收集和处理计划边际改进的平均 WTP 的下限为 14.65 美元。研究还发现，金钱信息使 WTP 增加了 20.5%，而非金钱信息对 WTP 产生了负面影响，但在统计上并不显著。
