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关于狗的英语美文阅读狗狗能识别人的情绪Soyouthinkyouknowyourdog.Buthowwelldoesyourdogknowyou?Sheprobablyrecognizesyouwhensheseesyou.Butcanadogtellbysimplylookingatyouwhetheryouhaveahappyoranangryexpressiononyourface?ResearchersinAustriahavetaughtpetdogstoknowthedifference.Dogsareverymindfulofsound.Whendogownersshoutorspeakinastrong,harshvoice,dogsoftenactguiltyandquietlymoveawayfromthearea.Recently,researchersfoundthatdogscanlookatourfaces,andtellthedifferencebetweenasmileandafrown.Theanimalswereabletorecognizealookofapprovalfromoneofdisapproval.ResearchersattheUniversityofVeterinaryMedicine,Viennaperformedaseriesofexperiments.Theytaughtdogstorecognizefacialexpressions.Theyshowedthedogstwopicturesofeithertheupperorlowerhalfofaperson'sface.Ononepicture,thepersonlookedhappy.Theotherappearedangry.Thedogswerethenshownimagesoftheeyesormouthsofpeopletheyhadneverseenbefore.Theywerealsoshownthelefthalfofthefacesusedintraining.CorsinMullerledthestudy."Wewereessentiallyspeaking,dotheyrealizethatsmilingeyeshavethesamemeaningasasmilingmouth,orangryeyeshavethesamemeaningasanangrymouth?Anditturnedoutthattheyreallydidperformverywellintheseprobetrials.Oncetheyhadlearnedtheinitialdiscrimination,theycouldspontaneously,immediatelychoosethecorrectonealsointheprobetrialswiththenormalstimuli."Oncethedogslearnedtorecognizewhichimagewashappyorangry,theycouldeasilyidentifythesameexpressionsinpicturesofanyface.CorsinMullersaysfuturestudieswilltrytoshowwhetherdogscanlearnthemeaningoffacialexpressions--forexample,whetherafrownshowsthatsomeoneisangry."Whatwecansaywithourstudyisthattheycandiscriminatethem,thattheycantelltheseonesaredifferent.Butwhatwecannotbesureofatthispointiswhatexactmeaningtheyareassociatingwiththesedifferentexpressions.""Seemsofcourselikelythattheywouldassociatesomepositivemeaningwiththesmileyfaceandtheywouldassociatesomerathernegativemeaningwiththeangryface.Butwhatexactlytheyareassociatingwiththeseexpressionswecannotknowatthispoint."Intheexperiments,researchersfoundthedogswereslowertolinkare
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