The-critical-period-hypothesis

LOGOThecriticalperiodhypothesis王雨萌朱瑜袁芬芬李丽丽Thecriticalperiodhypothesisisthesubjectofalong-standingdebateinlinguisticsandlanguageacquisitionovertheextenttowhichtheabilitytoacquirelanguageisbiologicallylinkedtoage.(CPH)In1967,Lenneberg,apscho-biologist,suggestedthatthereisaperiodduringthehumanlifespanfrominfancytopuberty(age2to13)thatiscriticaltolanguagelearning,duringwhichlearningissuccessfulandafterwhichitismarginal.Thecriticalperiodhypothesisstatesthatthefirstfewyearsoflifeisthecrucialtimeinwhichanindividualcanacquireafirstlanguageifpresentedwithadequatestimuli.Iflanguageinputdoesn'toccuruntilafterthistime,theindividualwillneverachieveafullcommandoflanguage—especiallygrammaticalsystems.(SLA),althoughthisismuchlesswidelyaccepted.RecentstudieshaverecognizedcertainaspectsofSLAmaybeaffectedbyage,whileothersremainintact.Theobjectiveofthisstudyistoinvestigatewhethercapacityforvocabularyacquisitiondecreaseswithage.•Boththeoriesagreethatchildrenhaveaneurologicaladvantageinlearninglanguages,andthatpubertycorrelateswithaturningpointinability.EffectsofagingForexample,adultsecond-languagelearnersnearlyalwaysretainanimmediatelyidentifiableforeignaccent,includingsomewhodisplayperfectgrammar.Somewritershavesuggestedayoungercriticalageforlearningphonologythanforsyntax.LOGOClicktoeditcompanyslogan.