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Open research questions in Economic and Environmental Valuation

193 unresolved questions extracted from the limitations and future-work sections of 1,546 Economic and Environmental Valuation papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Further research on the design of environmental markets, - Investigation of the social value of offsets in different contexts, - Analysis of the impact of environmental offsets on different stakeholders

    Conservation Priorities and Environmental Offsets: Markets for Florida Wetlands · 2026 · DOI

  • The paper identifies a gap in the existing literature on environmental offsets, which fails to account for the social value of offsets and the potential for offsets to raise concerns. The study highlights the need for a framework that can evaluate the effectiveness of environmental offsets in decentralized markets.

    Conservation Priorities and Environmental Offsets: Markets for Florida Wetlands · 2026 · DOI

  • The study does not explicitly identify specific technical or domain challenges. However, it can be inferred that the challenges include understanding patient preferences for home-based healthcare and support services and addressing the gap in the literature.

    Preference of primary care patients for home-based healthcare and support services: a discrete choice experiment in China · 2024 · DOI

  • Prior DCE studies have primarily concentrated on the preferences of individuals with specific conditions. There is a gap in the understanding of patient preferences for the comprehensive array of home-based healthcare and support services. The study aims to address this gap.

    Preference of primary care patients for home-based healthcare and support services: a discrete choice experiment in China · 2024 · DOI

  • Evidence on public preferences and willingness to pay for autonomy enhancing dementia care remains scarce in Ireland, where dementia care is largely publicly funded.

    Public Preferences for Autonomy-Enhancing Dementia Care in Ireland: A Protocol for a Discrete Choice Experiment. · 2026 · DOI

  • However, consumers lack awareness and knowledge about myGAP-certified vegetables; thus, their willingness to pay for sustainably produced myGAP vegetables remains unknown.

    Klang Consumer’s Willingness to Pay (WTP) for Malaysian Good Agricultural Practices (myGAP) Certified Vegetables · 2025 · DOI

  • Limited research has evaluated potential implementation of PGx testing in populations who are medically underserved and none have evaluated their preferences regarding PGx test characteristics and cost.

    Estimating preferences and willingness to pay for pharmacogenetic testing in populations who are medically underserved: a discrete choice experiment · 2024 · DOI

  • However, both incentives are integrated in working practice, and existing theoretical studies have suggested that various income levels may influence the substitution effect of both incentives, while the empirical evidence is lacking.

    The substitution effect of financial and non-financial incentives at different income levels in physician recruitment: evidence from medical students in China · 2024 · DOI

  • This review aims to scope the literature on stated and revealed willingness to pay (WTP) for emptying on-site sanitation systems and to identify determinants of WTP and gaps in knowledge.

    Determinants of Willingness to Pay for Fecal Sludge Management Services and Knowledge Gaps: A Scoping Review · 2024 · DOI

  • Future research should consider services that adopt flexible pricing or mobile money payment and optimize their emptying operations to increase WTP.

    Determinants of Willingness to Pay for Fecal Sludge Management Services and Knowledge Gaps: A Scoping Review · 2024 · DOI

  • Future research can model dynamic feedbacks and inform adaptive management. The framework can be applied to other contexts, such as licensing and payment schemes in protected areas.

    Optimizing environmental regulation and ecological compensation for social welfare maximization in protected area ecotourism under ecological constraints · 2026 · DOI

  • The paper identifies a gap in the literature on optimizing environmental regulation and ecological compensation for social welfare maximization. The gap is in the development of a framework that balances ecological integrity and equitable local development under binding ecological constraints.

    Optimizing environmental regulation and ecological compensation for social welfare maximization in protected area ecotourism under ecological constraints · 2026 · DOI

  • Further research could explore the willingness to pay for renewable energy official development assistance in other countries, - Investigating the impact of different attributes on willingness to pay

    Taxpayers’ Willingness to Pay for Global Decarbonization via Renewable Energy Official Development Assistance: A Discrete Choice Experiment in South Korea · 2026 · DOI

  • The paper identifies a gap in the understanding of public willingness to pay for renewable energy official development assistance. Prior studies have focused on aggregate recipient impacts, sidelining donor taxpayers' prospective valuations of trade-offs between humanitarian, environmental, and strategic dimensions.

    Taxpayers’ Willingness to Pay for Global Decarbonization via Renewable Energy Official Development Assistance: A Discrete Choice Experiment in South Korea · 2026 · DOI

  • There is a lack of studies on the valuation of coastal ecosystem services in South Korea. There is a need for a discrete choice experiment to estimate willingness to pay for ecosystem services enhancements.

    Economic valuation of coastal ecosystem services mitigating climate impacts: A choice experiment in South Korea · 2026 · DOI

  • The economic value of volcanic-slope agricultural landscapes remains underexamined, particularly in developing countries. There is a need to correct for on-site sampling bias in travel cost estimation.

    Estimating the Recreational Value of Volcanic-Slope Agricultural Landscapes Using Avidity-Corrected Travel Cost Models · 2026 · DOI

  • ROI estimates based on spending impacts or stated-preference surveys have limitations. There is a need for a more defensible basis for estimating the ROI of public libraries. The integrated valuation framework addresses this gap by combining three measurement logics.

    An Integrated Valuation Framework for Estimating ROI in Public Services: The Case of Public Libraries in Kansas · 2026 · DOI

  • In this case, the contingent-valuation-only aggregate (derived from the median WTP and extrapolated to the service population) is substantially smaller than the market-based direct-benefit estimate, consistent with longstanding concerns that WTP responses often embed limited information, symbolic support, and framing effects rather than the economic value actually received.

    An Integrated Valuation Framework for Estimating ROI in Public Services: The Case of Public Libraries in Kansas · 2026 · DOI

  • Limited effectiveness of source separation practices, - Persistence of a waste management model heavily reliant on unsorted collection, - Implementation gaps in the Extended Producer Responsibility system

    Environmental Awareness and Participation Intentions in Moldova’s Deposit Return System · 2026 · DOI

  • Future research should investigate the economic benefits of the DRS. Future research should explore the impact of public awareness campaigns on participation intentions.

    Environmental Awareness and Participation Intentions in Moldova’s Deposit Return System · 2026 · DOI

  • There is a lack of understanding of consumer preferences for environmentally conscious practices in landscape pest management. There is a need to develop effective marketing strategies for scouting-based IPM services offered by landscape service providers.

    US consumers’ willingness to pay for scouting and integrated pest management-related services offered by landscape service providers · 2026 · DOI

  • There is a need to understand visitor preferences to conserve the natural sites they visit. The study identifies a gap in the understanding of willingness to pay for conservation of the Endangered red panda. The growing popularity of watching wildlife can cause pressure on ecosystems and disrupt wildlife behaviors.

    Willingness to pay for conservation of the Endangered red panda Ailurus fulgens in eastern Nepal · 2026 · DOI

  • Improper solid waste management remains a critical challenge in coastal communities. Inefficient waste collection systems, improper disposal practices, and weak enforcement of environmental policies contribute to the accumulation of waste in coastal environments. The study aims to address the environmental pressures such as pollution, coastal degradation, and unsustainable waste practices.

    Economic valuation and machine learning analysis of willingness to pay for improved solid waste management in coastal communities · 2026 · DOI

  • The study identifies a gap in the existing literature on the willingness to pay for improved solid waste management services in coastal communities. The study addresses the behavioral–implementation gap by examining the factors influencing willingness to pay.

    Economic valuation and machine learning analysis of willingness to pay for improved solid waste management in coastal communities · 2026 · DOI

  • The complexity of presenting multiple single-mode and multimodal alternatives in stated choice experiments. The need to manage the cognitive load of respondents in choice experiments. The challenge of identifying the determinants of mode choice and WTP for different travel attributes.

    Measuring willingness to pay for travel time savings, CO2 emissions reduction and calories burned when multiple modes are available: an application of the partial choice set approach · 2026 · DOI

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193 open questions have been extracted from the limitations and future-work passages of 1,546 Economic and Environmental Valuation papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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