Assessing the effects of "appeal to authority" in the evaluation of environmental goods. Evidences from an economic experiment in Mt Etna, Italy

In this study we aim to assess how public opinion perceives the value of dry-stone walls in the terraced vineyards of Mt Etna (Italy), recently named intangible cultural heritage of Humanity by UNESCO because they are an “example of human manufacture realized in perfect harmony with the environment”. We referred to the concept of “appeal to authority” that is a form of defeasible argument in which a claimed authority’s support is used as evidence for an argument’s conclusion. By a Contingent Valuation approach, we showed that the authoritative role of UNESCO affected people’s willingness to pay to preserve dry-stone walls in the terraced vineyards in Mt. Etna. The role of the Institutions dedicated to the protection of environmental goods appears relevant in promoting the preservation of environmental resources for future generations.