Heckman, James J. - Forschungsinstitut zur Zukunft der Arbeit <Bonn> - 2008
parameters are defined and identified to address specific policy problems... … (s;!): This point is
more general and receives considerable emphasis in the econometrics literature (e.g., Heck-
man …
Keywords: causality, econometrics, Roy model, Neyman-Rubin model,
subjective and objective evaluations, anticipated vs …