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1、Chapter6MixedMethodsandCausalAnalysisDavidJ.HardingandKristinS.SeefeldtAbstractInterestinanduseofmixedmethodsresearchinthesocialscienceshasgrowntremen-douslyinrecentyearsandhasthepotentialtoassistinaddressingcorechallengesincausalinference.Wediscusswaysinwhichtheadditionof
2、aqualitativecomponentcanservemultiplerolesincausalanalyses,includingunderstandingtreatmentdeÞnition,conceptmeasurement,selectionintotreatment,causaleffectmechanisms,andeffectheterogeneity.Wealsodescribehowquantitativeandqualitativemethodologiescanbeandhavebeencombinedinstu
3、diesseekingtomakecausalclaims,highlightingsomeofthekeyresearchdesigndecisionsinintegratingqualitativeandquantitativemethodologies.Giventheabilityofqualitativeresearchtogreatlyenhancequantitativestudiesconcernedwithcausality,wearguethatmorecausalstudiesshouldincorporatemixe
4、dmethodsapproachesintotheirresearchdesigns.IntroductionInterestinanduseofmixedmethodsresearchdesignshasexplodedinthelasttwodecades,bothintraditionalsocialsciencedisciplineslikesociologyandpoliticalscienceandinappliedÞeldslikeeducation,nursing,publichealth,andsocialwork(Bry
5、man2006).Theresulthasbeenanaccumulationofstudiesandpracticalknowledgeaboutcombiningqualitativeandquantitativemethodsaswellasagrowingcottageindustryofmixedmethodshandbooks,textbooks,andreaders(e.g.,TashakkoriandTeddlie2003;CreswellandPlanoClark2007;PlanoClarkandCreswell2008
6、).Giventhisexistingbaseofknowledgeonmixedmethods,ourobjectiveinthischapterisnarrower:todescribethewaysinwhichqualitativeresearchcontributestothegoalsofcausalinferenceasdeÞnedWethankJenniferBarber,GaryGoertz,andStephenMorganforhelpfulcommentsonapreviousversionofthispaper.D.
7、J.Harding()SociologyandPublicPolicy,UniversityofMichigan,AnnArbor,MI,USAe-mail:dharding@umich.eduK.S.SeefeldtSocialWork,UniversityofMichigan,AnnArbor,MI,USAe-mail:kseef@umich.eduS.L.Morgan(ed.),HandbookofCausalAnalysisforSocialResearch,91HandbooksofSociologyandSocialResea
8、rch,DOI10.1007/978-94-007-6094-36,©SpringerScienceCBusinessMediaDordrecht201392D.J.Hardin