Valuation of ecosystem services and social choice: the impact of deliberation in the context of two different aggregation rules - Archive ouverte HAL Access content directly
Journal Articles Social Choice and Welfare Year : 2022

Valuation of ecosystem services and social choice: the impact of deliberation in the context of two different aggregation rules

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Abstract

This paper describes an empiric study of aggregation and deliberation—used during citizens’ workshops—for the elicitation of collective preferences over 20 different ecosystem services (ESs) delivered by the Palavas coastal lagoons located on the shore of the Mediterranean Sea close to Montpellier (S. France). The impact of deliberation is apprehended by comparing the collectives preferences constructed with and without deliberation. The same aggregation rules were used before and after deliberation. We compared two different aggregation methods, i.e. Rapid Ecosystem Services Participatory Appraisal (RESPA) and Majority Judgement (MJ). RESPA had been specifically tested for ESs, while MJ evaluates the merit of each item, an ES in our case, in a predefined ordinal scale of judgment. The impact of deliberation was strongest for the RESPA method. This new information acquired from application of social choice theory is particularly useful for ecological economics studying ES, and more practically for the development of deliberative approaches for public policies..

Dates and versions

hal-03769324 , version 1 (05-09-2022)

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Mariam Maki Sy, Charles Figuières, Hélène Rey-Valette, Richard Howarth, Rutger de Wit. Valuation of ecosystem services and social choice: the impact of deliberation in the context of two different aggregation rules. Social Choice and Welfare, In press, ⟨10.1007/s00355-022-01421-7⟩. ⟨hal-03769324⟩
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