Memory

第4章

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第4章

Memory Bednorz Achim

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Memory
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  Onthebasisofthishypothesis,theexplanationofthefactthatthenumbersofthefirstgroupcomeoutsomewhattoolargeisthat,inthecourseoftheexperiment,theexistenceofasavinginworkinthecaseofthederivedserieswasanticipated,andforthisreasonthelearningoftheseriestookplaceinvoluntarilywithasomewhatgreaterconcentrationofattention。

  Ontheotherhand,itmaybethat,inconsequenceoftheexcludedknowledge,therehasbeenatworkinthecaseofthenumbersofthesecondgroupadisturbingelementwhichhasmadethemsmaller。Here,tobesure,duringthelearningofthederivedseriesaverylivelycuriositydevelopedconcerningthecategoryoftransformationtowhichtheserieswhichhadjustbeenlearnedbelonged。Thatthismusthavehadadistracting,andthereforeretarding,influenceisprobablenotonlyinitselfbutalsothroughtheresultobtainedfromtheseriesderivedbypermutationofsyllables。Itwastobeexpectedthattheidentityofthesyllables,aswellasoftheinitialandendterms,wouldmakeitselffeltinthiscasebyasavingofwork,howeversmallthatsavingmightbe。Thelattereffectappears,itistrue,intheexperimentsofthefirstgroup。Withthoseofthesecondgroup,however,thereisnoticeable,insteadofthissavingofwork,aslightadditionalexpenditureoftime。This,ifitisnotmerelyaccidental,canscarcelybeexplainedotherwisethanthroughthedistractingcuriositymentioned。

  Itispossiblethatbothinfluenceswereatworksimultaneouslysothatthefirstexperimentsgaveresultswhichweresomewhattoohigh;andthesecond,resultsthatweresomewhattoolow。Itisallowable,underthishypothesis,toputthetwosetsoffigurestogethersothatthecontrastingerrorsmaycompensateeachother。Inthiswaytherewasfinallyobtainedoutofthe85doubleteststhefollowingtable。Section39。DiscussionofResultsIntheforegoingtableanespecialinterest,itseemstome,isconnectedwiththelast,andalsowiththenexttothelast,rowofnumbers。Whentherewascompleteidentityofallthesyllablesandtheinitialandendtermswereleftintheirplaces,theaveragesavingoftimefor17testsdealingwiththelearningofthederivedserieswassoslightthatitwashardlytobedetermined。Itfellwithinhalfofitsprobableerror。Thesyllableswere,therefore,inthemselves,outsideoftheirconnection,sofamiliartomethattheydidnotbecomenoticeablymorefamiliarafterbeingrepeated32times。Onthecontrarywhenarelatedserieswasrepeatedthesamenumberoftimes,eachsyllablebecamesofirmlyboundtothesyllablewhichfollowed8placesbeyondthat24hourslatertheinfluenceofthisconnectioncouldbedeterminedinnodoubtfulfashion。Itattainsavalue6timestheprobableerror。Itsexistence,therefore,mustbeconsideredtobefullyprovedalthoughnaturallywecannotbesosurethatitssizeisexactlywhatitwasfoundtobeintheexperiments。Althoughitsabsolutevalueissmall,yetitsinfluenceamountstoonetenthofthatoftheconnectionwhichbindseverymembertoitsimmediatesuccessor。Itissosignificant,andatthesametimethedecreaseintheafter-effectofconnectionswhichwereformedover2,3,7interveningmembersissogradualaone,thattheassertioncanbemade,amthesegroundsalone,thateventhetermswhichstandstillfurtherfromoneanothermayhavebeenboundtoeachothersubconsciouslybythreadsofnoticeablestrengthatthetimeofthelearningoftheseries。

  Iwillsummarisetheresultssofargiveninatheoreticalgeneralisation。

  Asaresultoftherepetitionofthesyllable-seriescertainconnectionsareestablishedbetweeneachmemberandallthosethatfollowit。Theseconnectionsarerevealedbythefactthatthesyllable-pairssoboundtogetherarerecalledtomindmoreeasilyandwiththeovercomingoflessfrictionthansimilarpairswhichhavenotbeenpreviouslyunited。Thestrengthoftheconnection,andthereforetheamountofworkwhichiseventuallysaved,isadecreasingfunctionofthetimeorofthenumberoftheinterveningmemberswhichseparatedthesyllablesinquestionfromoneanotherintheoriginalseries。Itisamaximumforimmediatelysuccessivemembers。Theprecisecharacterofthefunctionisunknownexceptthatitdecreasesatfirstquicklyandthengraduallyveryslowlywiththeincreasingdistanceoftheterms。

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