TED英语演讲稿：我们在出生前学到了什么演讲稿.doc

感谢你的观看感谢你的观看TED英语演讲稿：我们在出生前学到了什么_演讲稿mysubjecttodayislearning.andinthatspirit,iwanttospringonyouallapopquiz.ready?whendoeslearningbegin?nowasyouponderthatquestion,maybeyou’rethinkingaboutthefirstdayofpreschoolorkindergarten,thefirsttimethatkidsareinaclassroomwithateacher.ormaybeyou’vecalledtomindthetoddlerphasewhenchildrenarelearninghowtowalkandtalkanduseafork.maybeyou’veencounteredthezero-to-threemovement,whichassertsthatthemostimportantyearsforlearningaretheearliestones.andsoyouranswertomyquestionwouldbe:learningbeginsatbirth.welltodayiwanttopresenttoyouanideathatmaybesurprisingandmayevenseemimplausible,butwhichissupportedbythelatestevidencefrompsychologyandbiology.andthatisthatsomeofthemostimportantlearningweeverdohappensbeforewe’reborn,whilewe’restillinthewomb.nowi’masciencereporter.iwritebooksandmagazinearticles.andi’malsoamother.andthosetworolescametogetherformeinabookthatiwrotecalled“origins.”“origins”isareportfromthefrontlinesofanexcitingnewfieldcalledfetalorigins.fetaloriginsisascientificdisciplinethatemergedjustabouttwodecadesago,andit’sbasedonthetheorythatourhealthandwell-beingthroughoutourlivesiscruciallyaffectedbytheninemonthswespendinthewomb.nowthistheorywasof感谢你的观看感谢你的观看morethanjustintellectualinteresttome.iwasmyselfpregnantwhileiwasdoingtheresearchforthebook.andoneofthemostfascinatinginsightsitookfromthisworkisthatwe’realllearningabouttheworldevenbeforeweenterit.whenweholdourbabiesforthefirsttime,wemightimaginethatthey’recleanslates,unmarkedbylife,wheninfact,they’vealreadybeenshapedbyusandbytheparticularworldwelivein.todayiwanttosharewithyousomeoftheamazingthingsthatscientistsarediscoveringaboutwhatfetuseslearnwhilethey’restillintheirmothers’bellies.firstofall,theylearnthesoundoftheirmothers’voices.becausesoundsfromtheoutsideworldhavetotravelthroughthemother’sabdominaltissueandthroughtheamnioticfluidthatsurroundsthefetus,thevoicesfetuseshear,startingaroundthefourthmonthofgestation,aremutedandmuffled.oneresearchersaysthattheyprobablysoundalotlikethethevoiceofcharliebrown’steacherintheold“peanuts”cartoon.butthepregnantwoman’sownvoicereverberatesthroughherbody,reachingthefetusmuchmorereadily.andbecausethefetusiswithherallthetime,ithearshervoicealot.oncethebaby’sborn,itrecognizeshervoiceanditpreferslisteningtohervoiceoveranyoneelse’s.howcanweknowthis?newbornbabiescan’tdomuch,butonethingthey’rereallygoodatissucking.researcherstakeadvantageofthisfactbyrigginguptworubbernipples,sothatifababysucksonone,ithearsarecordingofitsmother’svoiceonapairof感谢你的观看感谢你的观看headphones,andifitsucksontheothernipple,ithearsarecordingofafemalestranger’svoice.babiesquicklyshowtheirpreferencebychoosingthefirstone.scientistsalsotakeadvantageofthefactthatbabieswillslowdowntheirsuckingwhensomethingintereststhemandresumetheirfastsuckingwhentheygetbored.thisishowresearchersdiscoveredthat,afterwomenrepeatedlyreadaloudasectionofdr.seuss’“thecatinthehat”whiletheywerepregnant,theirnewbornbabiesrecognizedthatpassagewhentheyhearitoutsidethewomb.myfavoriteexperimentofthiskindistheonethatshowedthatthebabiesofwomenwhowatchedacertainsoapoperaeverydayduringpregnancyrecognizedthethemesongofthatshowoncetheywereborn.sofetusesareevenlearningabouttheparticularlanguagethat’sspokenintheworldthatthey’llbeborninto.astudypublishedlastyearfoundthatfrombirth,fromthemomentofbirth,babiescryintheaccentoftheirmother’snativelanguage.frenchbabiescryonarisingnotewhilegermanbabiesendonafallingnote,imitatingthemelodiccontoursofthoselanguages.nowwhywouldthiskindoffetallearningbeuseful?itmayhaveevolvedtoaidthebaby’ssurvival.fromthemomentofbirth,thebabyrespondsmosttothevoiceofthepersonwhoismostlikelytocareforit—itsmother.itevenmakesitscriessoundlikethemother’slanguage,whichmayfurtherendearthebabytothemother,andwhichmaygivethebabyaheadstartinthecriticaltaskoflearninghowtounderstandandspeakitsnativelanguage.感谢你的观看感谢你的观看butit’snotjustsoundsthatfetusesarelearningaboutinutero.it’salsotastesandsmells.bysevenmonthsofgestation,thefetus’tastebudsarefullydeveloped,anditsolfactoryreceptors,whichallowittosmell,arefunctioning.theflavorsofthefoodapregnantwomaneatsfindtheirwayintotheamnioticfluid,whichiscontinuouslyswallowedbythefetus.babiesseemtorememberandpreferthesetastesoncethey’reoutintheworld.inoneexperiment,agroupofpregnantwomenwasaskedtodrinkalotofcarrotjuiceduringtheirthirdtrimesterofpregnancy,whileanothergroupofpregnantwomendrankonlywater.sixmonthslater,thewomen’sinfantswereofferedcerealmixedwithcarrotjuice,andtheirfacialexpressionswereobservedwhiletheyateit.theoffspringofthecarrotjuicedrinkingwomenatemorecarrot-flavoredcereal,andfromthelooksofit,theyseemedtoenjoyitmore.asortoffrenchversionofthisexperimentwascarriedoutindijon,francewhereresearchersfoundthatmotherswhoconsumedfoodanddrinkflavoredwithlicorice-flavoredaniseduringpregnancyshowedapreferenceforaniseontheirfirstdayoflife,andagain,whentheyweretestedlater,ontheirfourthdayoflife.babieswhosemothersdidnoteataniseduringpregnancyshowedareactionthattranslatedroughlyas“yuck.”whatthismeansisthatfetusesareeffectivelybe