ABSTRACT
Benefits transfer refers to the practice of applying nonmarket values obtained from primary studies of resource or environmental changes undertaken elsewhere to the evaluation of a proposed or observed change that is of interest to the analyst. Examples include
• using values per day for recreational angling at one lake obtained from a travel cost demand study to value an increase in the same activity at another lake;
• using the willingness to pay to avoid an asthma attack obtained from an averting behavior study to value the prevention of a day of respiratory symptoms; and
• using the willingness to pay to preserve a square mile of tropical rain forest in one country estimated from a stated preference study to value the preservation of a square mile of rain forest in another country.
