________astheEnglishsayinggoes．UnfortunatelyhonestyoftendesertsuswhennooneiswatchingBritishpsychologistsreportedlastweek．ResearchersatUK'sNewcastleUniversitysetup

　　________astheEnglishsayinggoes．UnfortunatelyhonestyoftendesertsuswhennooneiswatchingBritishpsychologistsreportedlastweek．

　　ResearchersatUK'sNewcastleUniversitysetupanexperimentintheirpsychologydepartment'scoffeeroom．Theysetakettlewithteacoffeeandmilkonthecounterandhungupasignlistingthepricefordrinks．Peoplehelpingthemselvestoacupofteaweresupposedtoputafewcentsintheboxnearby．Thescientistshungaposterabovethemoneyboxandchangedeachweekbetweenimagesofgazingeyesandpicturesofflowers．

　　Theresearchersfoundthatstaffpaid2.76timesmorefortheirdrinkswhentheimageoftheeyeswashung．"Franklywewereshockedbythesizeoftheeffect"saidGilbertRobertsoneoftheresearchers．

　　Eyesareknowntobeapowerfulperceptual(知觉的)signalforhumansscientistssay．"Eventhoughtheeyeswerenotrealtheystillseemedtomakepeoplebehavemorehonestly"saidMelissaBatesonabehaviouralbiologistandleaderofthestudy．

　　Researchersbelievetheeffectshedslightonourevolutionarypast．Itmayarisefrombehaviouralfeaturesthatdevelopedwhenearlyhumansformedsocialgroupstostrengthentheirchancesofsurvival．Forsocialgroupstoworkindividualshadtoco-operateratherthanactselfishly．

　　"There'sanargumentthatifnobodyiswatchingusitisinourintereststobehaveselfishly．Butwhenwe'rebeingwatchedweshouldbehavebetter．Sopeopleseeusasco-operativeandbehavethesamewaytowardsus"Batesonsaid．

　　Thenewfindingindicatesthatpeoplehaveastrikingresponsetoeyes．ThatmightbebecauseeyesandfacessendastrongbiologicalsignalwehavedevelopedtorespondtoBatesonsaid．

　　Thefindingcouldbeputtopracticaluse．Forexampleimagesofeyescouldpromoteticketsalesonpublictransportandimprovesurveillance(监视)systemstopreventanti-socialbehaviour．

　　(1)

　　Intheexperimentaposterwashungabov