摘要：In this study we compare willingness to pay for a seafood traceability system from contingent behavior demand and
contingent valuation referendum vote models using data from a survey of Gulf of Mexico oyster consumers following
the BP oil spill in 2010. We estimate a random effects model of oyster demand using contingent behavior data and
find that a traceability program increases demand and consumer surplus. We estimate a referendum model for the
seafood traceability program using contingent valuation data. We find that welfare estimates from the contingent
behavior and contingent valuation methods are convergent valid under certain conditions.
