A New Identification Condition for Recursive Models With Correlated Errors
Carlos Eduardo Fisch de Brito, Judea Pearl · Structural Equation Modeling A Multidisciplinary Journal · 2002
This article establishes a new criterion for the identification of recursive linear models in which some errors are correlated. We show that identification is ensured as long as error correlation does not exist between a cause and its direct effect; no restrictions are imposed on errors associated with indirect causes.