International Institute of Fisheries Economics and Trade
Abstract
This paper considers interdependence in seafood consumption exploiting data on consumer expenditures in
Spain, using dominance models. Interdependence is modeled by making parameters in both the participation and the
consumption equations dependent upon current consumption in the reference group of a particular consumer. The estimates
of a parsimonious model using latent variables reflecting interdependencies seem better in parameters as important as
expenditure elasticity or correlation between decision to purchase seafood and the level of seafood consumption
