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1、AgeandSecondLanguageAcquisitionandProcessing:ASelectiveOverviewDavidBirdsongUniversityofTexasatAustinThisarticleprovidesaselectiveoverviewoftheoreticalissuesandempiricalfindingsrelatingtothequestionofageandsecondlanguageacquisition(L2A).Bothbehav-ioralandbrain-baseddataarediscus
2、sedinthecontextsofneurocognitiveagingandcognitiveneurofunctioninthematureindividual.Movingbeyondtheclassicalnotionof“deficient”L2processingandacquisition,weconsiderthecomplementaryquestionoflearnerpotentialinpostado-lescentL2A.Theoutcomeofsecondlanguageacquisition(L2A)amongadult
3、sisdemonstrablydifferentinmanyrespectsfromtheout-comeoffirstlanguageacquisition(L1A)amongchildren.Depart-ingfromthisbasicobservation,researchersattempttounder-standthevarioussourcesofage-relatedeffectsinL2A.Thepresentarticleisanoverviewoffactsandtheoreticalissuesconcerningageand
4、L2A.Thiscontributionconsidersbothbehavioraldataandbrain-basedprocessingdata.Thereviewin-cludesfindingsandcontroversiesintheareasofneurocognitivedevelopmentandaging,andcognitiveneurofunctioninthema-turebrain.Acomprehensivetreatmentofthefactsandissuesisnotpossibleinthespaceavailab
5、le.Itishoped,nevertheless,thatthisselectiveofferingprovidesusefulscaffoldingforotherarticlesinCorrespondenceconcerningthisarticleshouldbeaddressedtoDavidBirdsong,DepartmentofFrenchandItalian,UniversityofTexas,1UniversityStationB7600,Austin,TX78712-0224.Internet:birdsong@ccwf.cc.
6、utexas.edu910AgeandL2AcquisitionandProcessingthisvolumethatexaminecognitiveandneuralaspectsofL2useandacquisition.BackgroundandTerminologyOverthepast20orsoyears,agreatdealofempiricalresearchontheagequestioninL2AhasfocusedontheendstateofL2A,notonratesofattainmentoronstagesofL2de-v
7、elopment.Thedevelopmentalliteratureandcomparativerate(adultvs.child)literaturearecertainlynotwithoutinterest,andoverviewsofthisresearchcanbefoundinKlein(1995),Marinova-Todd,Marshall,andSnow(2000),andPienemann,DiBiase,Kawaguchi,andHakansson(2005).However,itisessentialthattheendst
8、atereceiveitsshareofattention,becauseitiseviden
