00917nam0-22002771i-450-990003163080403321000316308FED01000316308(Aleph)000316308FED0100031630820000920d--------km-y0itay50------baitaIT<<The >>Pre-program Earnings DIP and the Determinants of Participation in a Social ProgramImplications for Simple Program Evaluation StrategiesJames J. Heckman, Jeffrey A. SmithWorking paper seriesNBER6983G/2.54Heckman,James Joseph<1944- >Smith,Jeffrey A.ITUNINARICAUNIMARCBK990003163080403321PaperSESSESPre-program Earnings DIP and the Determinants of Participation in a Social Program458896UNINAING01