[3]Naudeau,S.,Kataoka,N.,Valerio,A.,Neuman,M.J.,&Elder,L.K..InvestinginYoungChildren:AnEarlyChildhoodDevelopmentGuidefor
PolicyDialogueandProjectPreparation[M].Washington,D.C:TheWorldBank,2011.
[4]Paxson,C.,N.Schady.CognitivedevelopmentamongyoungchildreninEcuador:Therolesofwealth,health,andparenting[J].JournalofHuman
Resources,2007,42(1):49-84.
[5]Rubio-Codina,Marta,OrazioAttanasio,CostasMeghir,SallyGrantham-McGregor&NataliaVarela.Socioeconomicgradientofchilddevelopment:
Cross-sectionalevidencefromchildren6-42monthsinBogota[J].JournalofHumanResources,2013,50(2):464-483.
[6]Case,Anne,AngelaFertig&ChristinaPaxson.Thelastingimpactofchildhoodhealthandcircumstance[J].JournalofHealthEconomic,2005,24:
365-389.
[7]Heckman,J.TheEconomicCaseforInvestinginYoungChildren[R].PresentationattheNationalBusinessLeaderSummitonEarly
ChildhoodInvestment,Atlanta,Ga.,2013-09-22.
[8]Gertler.P.,J.Heckman,R.,Pinto,A.Zanolin,Ch.Vermeersch,S.Walker,S.M.Chang,&S.Grantham-McGregor.Labormarketreturnstoanearly
childhoodstimulationinterventioninJamaica[J].science,2014,344(6187),998-1001.
[9]Camilli.G.,Vargas,S.,Rayn,S.&Barnett,W.S..Meta-analysisoftheeffectofearlyeducationinterventionsoncognitiveandsocialdevelopment[J].
TeachersCollegeRecord,2010,112(3),579-620.
[10]Barnett,W..Preschooleducationanditslastingeffects:Researchandpolicyimplications[R].Boulder,CO:EducationandthePublicInterest
Center&EducationPolicyResearchUnit,2008.
[11]WorldBank.WorldBankSupporttoEarlyChildhoodDevelopment.AnindependentstudyIndependentEvaluationGroup,IEG[R].Washington,D.C:
TheWorldBank,2015.
[12]Bouguen,A.,D.Filmer,K.Macours,S.Naudeau.ImpactEvaluationofThreeTypesofEarlyChildhoodDevelopmentInterventionsinCambodia[R].