Abstract
Structural change in the consumption of four meats and fish is investigated. A GARP test does not reject the hypothesis that a stable set of consumers' perferences could have generated the data. However, since the power of this test may not be sufficient to detect structural change, a dynamic switching almost ideal demand system is estimated. Prices appear to be endogenous in the system and instrumental variables are used. A gradual structural change during the 1980s is found. This change is biased towards chicken and fish and against beef.

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