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Identification By Disaggregation, Matthew J. Cushing, Mary G. Mcgarvey
Identification By Disaggregation, Matthew J. Cushing, Mary G. Mcgarvey
Department of Economics: Faculty Publications
Standard economic theory predicts that the actions of individual participants in competitive markets have negligible effects on market-determined aggregates. Applied researchers, and even some econometric textbooks, incorrectly infer from this that market prices can be modeled as econometrically exogenous with respect to the quantity demanded of an individual consumer. This faulty inference has even led some researchers (for example, Robert Engle, 1978; Nicholas Kiefer, 1984; Roger Waud, 1974) to employ an estimation strategy we call identification by disaggregation (IBD). This procedure attempts to circumvent the simultaneity problem in a macro regression by disaggregating the dependent variable and estimating the relationship …