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Transferring the benefits of avoided health effects from water pollution between Portugal and Costa Rica

Published online by Cambridge University Press:  23 April 2003

David N. Barton  and
Susana Mourato
David N. Barton
Affiliation:
Interconsult International, Oslo, Norway. Email: dnb@interconsult.com
Susana Mourato
Affiliation:
Imperial College of Science, Technology and Medicine, London
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Abstract

Two very similar contingent valuation surveys eliciting willingness-to-pay (WTP) to avoid eye irritation, gastroenteritis, and coughing episodes due to seawater pollution were conducted on visitors to beaches in Portugal and Costa Rica. Various forms of the hypothesis regarding the transfer of mean WTP between the two countries were rejected, as was the hypothesis that model parameters were drawn from the same pooled sample across countries for three different illness episodes. When compared to on-site studies in Costa Rica, benefit transfer from Portugal leads to errors typically of the order of 100 per cent. Adjusting WTP for declared income or other easily accessible socio-demographic variables does not reduce transfer error. This study shows that transfer of health benefit estimates can be potentially quite unhealthy for policy analysis, questioning whether the time and resource savings are justified in this particular transfer context.

Type
Policy Options
Information
Environment and Development Economics , Volume 8 , Issue 2 , May 2003 , pp. 351 - 371
Copyright
© 2003 Cambridge University Press

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Footnotes

We are grateful to Richard Ready, University of Pennsylvania, Ståle Navrud, Agricultural University of Norway, and to two anonymous reviewers for comments and suggestions. Any mistakes or omissions are our own.Research conducted while at the Institute of Economics and Social Science, Agricultural University of Norway, with support from the Centre for Studies of the Environment and Resources (SMR), University of Bergen, and Norwegian Research Council.