Some tourism and recreational values are estimated by the travel cost method (TCM) using secondary data. The purpose of the primary collection could suffer from incentive compatibility problems. This being the case, the TCM value estimates may be biased, and extra care should be taken. This article provides theoretical background and illustrates the problem with a case study of visitors to Spain's Barcelona Zoo.
- Incentive compatibility problems
- Recreational values
- Secondary data
- Tourism values
- Travel cost method