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　　标题：ScienceSaysYouNeedtoStartTouchingPeopleMoreOften，Butdefinitelynotstrangersonthesubway。
　　source：details丨bySAMUELBLACKSTONE
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　　Ifyourethetypeofpersonwhoenjoysgivingbackscratches，rubs，ormassagesjustasmuchasyoulikereceivingthem，thecausemaybemorerelatedtoevolutionandsciencethanyourowngenerosity，saysanewstudyfromUniversityCollegeLondon。
　　InaseriesofstudiesconductedatUniversityCollegeLondonbyAikateriniFotopoulouandotherresearchers，participantsrepeatedlyratedotherpeoplesskinassofterthantheirs，regardlessofifitwastrueornot。Thefindings，researchersbelieve，maypointtoanevolutionary，biologicalprocessthatencouragestouchingasawayforpeopletobondwitheachother。
　　Whatisintriguingabouttheillusion〔ofsoftness〕isitsspecificity，saidresearcherAntjeGentschoftheUniversityCollegeLondon。Wefoundtheillusiontobestrongestwhenthestrokingwasappliedintentionallyandaccordingtotheoptimalpropertiesofthespecializedsystemintheskinforreceivingaffectivetouch。
　　Putmoresimply，theillusionofthesoftnessofskininthemindofthepersontouchingisbasedlargelyonwhatbodypartsandwhattypeofstrokespleasethepersonbeingtouchedthemost。Theillusionrevealsalargelyautomaticandunconsciousmechanismbywhichgivingpleasureisreceivingpleasureinthetouchdomain，Fotopoulousaid。Theoptimalproperties，previousstudieshaveshown，areslow，gentlestrokes，typicallyfoundinintimaterelationships，whichworktoencodethepleasureoftouch。
　　Tryingtofindanexplanationforthisphenomena，researcherslookedtowardtherolesocialtouchingplaysinphysicalandmentalhealth。Whilethemajorityofresearchhasfocusedonthebenefitsofreceivingtouching，muchlessisknownaboutthephysicalorpsychologicalbenefitsofactivetouching，thoughearlierstudiesfoundthatsoftnessandsmoothnessstimulatedareasofthebrainknowntobeassociatedwithemotionandreward。Asaresult，itwouldseemthattheillusionofsoftnessencouragespeopletowanttotouchothers，andthattouchingothersleadstosomesortofemotionalrewardforthepersontouching。
　　Justremember，therearegoodtouches，andtherearebadtouches。Onemayleadtoemotionalrewards，buttheothercouldleadyoutohandcuffs。