阅读理解Thebabymonkeyismuchmoredevelopedatbirththanthehumanbaby．Almostfromthemomentitisbornthebabymonkeycanmovearoundandholdtightlytoitsmother．Duringthefirst

　　阅读理解

　　Thebabymonkeyismuchmoredevelopedatbirththanthehumanbaby．Almostfromthemomentitisbornthebabymonkeycanmovearoundandholdtightlytoitsmother．Duringthefirstfewdaysofitslifethebabywillapproachandholdontoalmostanylargewarmandsoftobjectinitsenvironmentparticularlyifthatobjectalsogivesitmilk．Afteraweekormhoweverthebabymonkeybeginstoavoidnewcomersandfocusesitsattentionson“mother"－therealmotherorthemother-substitute(母亲替代树)．

　　Duringthefirsttwoweeksofitslifewarmthisperhapsthemostimportantpsychological(心理的)thingthatamonkeymotherhastogivetoitsbaby．TheHarlowsacouplewhoarebothpsychologistsdiscoveredthisfactbyofferingbabymonkeysachoiceoftwotypesofmother-substitutes－onecoveredwithcloth4ndonemadeofbarewire．Ifthetwoartificialmotherswereboththesametemperaturethelittlemonkeysalwayspreferredtheclothmother．Howeverifthewiremodelwasheatedwhiletheclothmodelwascoolforthefirsttwoweeksafterbirththebabymonkeyspickedthewarmwiremother-substitutesastheirfuvorites．Thereaftertheyswitchedandspentmostoftheirtimeonthemwcomfortableclothmother．

　　Whyisclothpreferabletobarewire?SomethingthattheHarlowscalledcontact(接級)comfortseemstobetheanswerandamostpowerfulinfluenceitis．Babymonkeysspendmuchoftheirtimerubbingagainsttheirmothers'skinsputtingthemselvesinasclosecontactwiththeparentastheycan．Whenevertheyounganimalisfrighteneddisturbedorannoyedittypicallyrushestoitsmotherandrubsitselfagainstherbody．Wiredoesn't“rub"aswellasdoessoftcloth．Prolonged(长时间的)“contactcomfort"withaclothmotherappearstogivethebabiesconfidenceandismuchmorerewardingtothemthaniscitherwarmthormilk．

　　AccordingtotheHarlowsthebasicqualityofbaby'sloveforitsmotheristrust．Ifthebabyisputintoanunfamiliarplayroomwithoutitsmotherthebabyignoresthetoysnonutterhowinterestingtheymightbe．Itscreamsinterrorandcurlsupintoafurrylittleball．