Samenessaraon02
Ieneralprinciplebyhandlingaprihegeneralpribedisedbyseparatingitfromthespestanwhichitisembedded。Buthowsuchaseparatihtabout?ThisisactuallytheclassiofgeneralqualitiesandspestaheformerarewhatdwellinPlato'sworldofpureideas,whereasthelatterareulatesouretellthetart?Forexample,howwedistinguish“threeness”fromthreeapples,theideaofserendipityfromaserendipitousevent,idHolyoak's(1980)casetheideaofsimultaneouslygpathsfratumoriomachbyradiation?
AsIhaveargued,iotheGreeal。(1993)andLobatoa(2002)studies,distorseparationhardlyeaboutbyfooanwhieralandthespecifipletelyiheformerimplicit,thelatterexplicit。Iftherearetwosuffitlydifferentihesamepriison(theprinciple)maypossiblybediswhatisdiffereahemoredifferentcasesavailabletreaterthelikelihoodthattheprinciplewillbedisedastheprimary,oronly,thingontoall,becauseofthelikelihoutwhatisdifferent(Reeves&Weisberg,1994)。Thelikelihoodofdistinguishingtheprisspestantiationalsobeenhancedbydrawinglearners'attentiontotheoweenthedifferentinstances。
Themainpointisthatieneralpriobeusedinthesepiricallyatleasttlesareioransfer-learhinginSituationA(disgageneralprindusingitinSituationB—islogitehetrasquotedbyLave(1988)demohefirstinstanwhiersdisapriuallyotheyaredealingwithSituatiohanSituationA。FromLave'spoihisbeseenasanexampleoflostruofthesolutiohesolutioexistpriortotheproblembeihepointofviewofmyownlihisisaheyofvariation。Withoutdifferentileasttwo)thelearuobeeawareofthegeneralpri,inafollow-upidHolyoak(1983)showedthatalthoughlearnershadlittlesuabstrag(eilespestaheyfrequentlymaodosowhehtwodifferentinstanecouldsay,ofcourse,thatseveralexamplesmakeitpossiblefortheleareneralpriheexamplesallembodythesamegeneralprirue,providedtheexamplesaredifferent。Usingthesameexampletwiceorseveraltimesinsteadwouldnotdo。
&ionforFutureLearning
Asstated,thisartiteogethedoeness,whichistheideathatrofitiionfromwhattheyhavelearnedinaion,theydosobecausetheymakeuseofthesamecapabilityiothesamefeaturesofthetwosituations。Iamgoistudyasthebasisformyseent。Thisstudywasbecauseitdiffersinimportasfromthestudiesdiscussedsofar。Thestudyiiooasetofstudiesorieoreparationforfuturelearning(e。g。,Bransford&Schwartz,1999;Schwartz&Bransford,1988)。Iudiestheobjectofresearchistheeffectiiiuatihthat,oinatraion。TransferhasalsopreviouslybeeermsoftheeffectsiiiioionforfuturelearningstudieshaveuhatareessentialtothepointI>
&ofdepartureiudiesisthestandardtransferparadigmaimedatparirawodifferentsf。Inatraditionaltransferapproaparablegroupsofstudentstrytolearnwhatisnomihiwodifferents,aestedforwhattheyhavelearhesameh。Totheextentthattherearediffereheyareihetwodifferentsftothesameforappraisal。
Now,itmightbethecasethatnodifferencesarefouwos。Oionsmight,however,bebetteratpreparingthelearnersforfutureleardoesnotyieldsuperioratdireastandardtraudy。Ioihis,BransfordandSchwartz(1999)suggestedtheuseofwhatSdMarting(2004)called“thedoubletraudentswereassigwoinstrualtreatments(SituationsA1andA2)。Halfofthestudentsfrombothtreatmentsweregiveoaresource(SituationB),suchasalepleworked-outproblem,followedbyarequesttosolveatransferproblem(Situatioherhalffrombothtreatmeosolvethetransferproblem(Situatiohoutaccesstresource。Theresearcherscalledthisadoubletransferparadigmbecausestuderansferin”whattheyhadlearheinstrualtreatmenttolearnfromtheresourdtheyra”whattheyhadlearheresourcetosolvethetargettransferproblem。Totheextentthattherewerediffereheywerebetweewos(SituationsA1andA2)asfarastheirdirecteffethetraask(SituationdtheireffelearninginSituationBareed。Thedifferehushaveiwokindsoftrafolloleofhowsuchadesignhasbeenusediudy。
SdMartin(2004)
Inthisstudy,theobject(whatwastobelearned)aring(high)sdifferentsdifferentdistributioioermsettaskgiverus。Thefollowingtaskwasutilized:“whichoftwostudents,whowereibiologydtookdifferes,didbetteroivetest?”Susareoistigstandardizedscores(i。e。,bydividingthediffereualsdthemeaributionthatthesgstobythestaionforthesamedistributirasptheratiohistransformatiohgradestudentspartigiudyhadtoicalrespewhichdistributionsmightdifferfromeaelytraltendendvariability。[TherearesimilaritieswiththeinJudd's(1908)experiment,whohadtoheaiohofwaterastwocriticaldifferewotaskstheyweredealingwith。]
Afterhavihstatisticsfor2weeks(allihestudeedsarios,suchasthefollowing:“whobroketheworldrecordbythemostimpressiveamount—JohninhighjumporMikeihrow?”Iheinstrualtreatments(Situatioswereaskedtoiheirownwayofsolvingtheproblemgivenrawdataforthedistributioresultsduriheotherinstrualtreatment(Situatioswereshohicalmethodfthescoresbyusinghistogramsahodfthestandardizedscoressubsequepragthismethoduhesupervisioeacher。Halfroupsalsoreceivedalearwoworked-outexamples(SituationB)。Thelearningresourteoprovidethestudentswithatwiththetargettransferproblem。Thestudeedhowtoputeaandardizedsc。,“IsBettybetteratassistsorsteals?”)。Finally,allofthestudehetargettransferproblem,oparestwodifferentbiologytests(Situationthisotalltherarovided,butonlythemeansandstaiosalongwithrawscoresforthetwostudentstopare。
Therewasnosignifitdifferewoinstrualtreatmentsforthestudentswhodidhelearningresource。However,theadditionalpoheworked-outexamplesinSituatiorikingdiffererohe“iasolutiroup(SituationA1)andlittleorfroupthatlyshohicalsolution(SituationA2)。
&showsthatalthoughthestudents'attempttoiasolutioproblem(SituationA1)didnothaveanyadvantagefthetargetproblem(Situationparedtotellisawayofsolvingit(Situatiohadadefiagewhetosolvethetargetproblem(SituationB)。Sothedifferehetransferproblemwashefirstpartoftheexperimeio)nortothesedpart(exposuretresource)。Theeffectwasduetotherelatiohefirstas。Theeffectofthefirstpartwasthusto。IfwedehreepartsA(bygSituationsA1andA2iher),B,andcludethatialeffeodiffereofBoified。Theeffetionwhatothertasksthelearer。Sotheeffectofataskoasklybedeterminedspecifithetextofagiveasks。InacewithLave's(1988)argumentforgsetsofsituations,insteadofonlytwosituationsatatime,gthesetmayimplythattheeffectofagiventaskoaskwillgeaswell。
ButwhatistheherelatiouationsAahestudeiongroupcameupwiththeicalsolutionoftheproblem(standardizedscores),whereasstudeell-and-praditiongroupwereshowhi。Yet,thereositiveeffectofA1andBonparedtotheeffectofA2andBonimportaheiionapproachwastheusecases。Asmehestudentsweresupposedtoparerawsddistributionstowhichthed。Bydoistriedtodetermiributionsdifferedfromeachother,aheicaldifferehem,eveniftheyotcapturethosefeaturesaioherex-pliteiguage。Ifthediffererovidedthestudentswithonekindoftrast,juxtaposingtheirownvagueideasabouttraltendendvariabilitywiththestandardstatisticalversionsofthesamephenomehemwitharast。
Ashasbeehmahepreparationforfuturelearningparadigm,SdMartin(2004)madeuseofdiffererasts)oweeioing(SituationA1)aold(SituationB),ontheonehand,andwithinA1(usinggiiher。Byengdiffereweeheleariceddifferewerecriticalfuishihem。
Thislineleadstothethatwhatwaslearhiscasewastheiivitytoperceivesituatioainways。Thatis,studentsdevelopedacapabilitytodisaspectsofthesituationascriticalorrelevantaosideratioime。Additioiohoseaspectsasrelevant。Thisimpliesthattheactsofdist(thatwhichislearned)andwhatisdisthesituatiouresofthesituationtowardwhichtheactsaredirected)aree。
&disethingbeingdisorythingbedisedwithoutanactofdist。Agly,learningabouttraltendencyorvariability,foristtodistraltendendvariabilityiributioersiure。
WhyUandiheoryisNecessaryfortheUandingofAheory
Iguethatitisactuallyimpossibletograspanythingerieerion。Itis,forinstance,diffipossible,touahouthavingeaalterhesamephenomenon。Howeotherwisedistihetheoryandthephethismeaimethatitisimpossibletouhefirsttheoryofapheweenter。Argumentsfhistoryofsceaspartofthescecurriculumareihisclaim:thus,bytrast(andparadoxiany),learningabouttheAristotelianparadigmofforrelationshipfortifiesuandingofitsoniaheiiohelpsstudentstouaoniangravitation,theideaofabsolutespace-timerevealsthemeaniivisti,thegeotricworldsystemfacilitatesuandingoftheheliotricmodel。。。(Tseitlin&Galili,2004)
Aristotleaon
&usexamihefirstoftheseexamples。Agtoon'sfirstlawofmotion,abodyremaioruestomovewiththesamevelolessaforceait。ThisbeillustratedbyaspatheearthtoVenuswithallofitsechedoff。Ifthiswereallwefoewton'slawwouldnotevenseemalaw,butratherastraightforirieralization,muchliketheobservationthatthingsfallwhehem。Ioperceivethesigon'sformulatioepoutsideit。Infagatenihinsteadoflookingatensinspacewoulddo。Ifochofftheewhiletravelingat50kmhraches,shewillheotuetotravelat50kmhr。Itslowsdownandsoooahalt。Asnoforceappearstoathecar,wemaycludethatbewrong。Buttheremindusthatairresistahatathegforwardwiththeechedoff,andanotherisfritheaxleaistheseforcesthatmakethecarstop。Iftherewereanofri,thecarwoulduetomoveforwardat50kmhr。Thereisalwaysairresistahereisalwaysfritheelive。Byjuxtaposion'sfirstlawwithoureverydayexperiencludethatfarfrommakirivialobservatioonsawandformulatedapriotbeseealloh。OureverydayexperienceismoreiheAristoteliaiomakesomethingmoveweneedaforow,thisprincipleprobablyseemsstraightforwardtomostofus,yetittradiewtonianformulation。Howisthis?WhatAristotlesaysisthatifabodyisatrest,ittakesaforakeitmove。Thisistrue。Buttheprincipleiseneralizedifwebelievethatifsomethingismovibeaforcethatkeepsitmoving。
Thediffereleahattheformertriestoexplainthedifferea,whereasthelattertriestoexplaindifferey,whererestbeseenasaspecialcaseofzerovelogeiyiscalledac(orde)。veloplebetweea,requiresaforentwithtvelogrest)doesnotitoon。Weseethedif-fereleaermsoftwodifferentwaysofmakingdistins。Theformermakesadistiweea,whereasthelattermakesadistiweentvelodgvelodrawtwos(atleast)fromthis。First,theonianwayofmakingdistiweenbodiesiismorepowerfulthaelianway(agtothestudyofphysid,theonianwayofmakiionbeesvisiblewhenitisjuxtaposedwiththeAristotelian。
Thisistheteowhyuaheoryisnecessaryfortheuandingofadoesitreallyworklikethisinpractice?GaliliandHazan(2000)providedempiricethatitdoesiheyparedtheuandingofopticsbystudentsengagedialyear-longhistoricallyorientedphysicscourse(thetargetgroup)withthatbystudentsatedinaparablealphysiparisongroup)。Maificideasriatedbyvirtuallyallofthestudegroup。Bywayoftrast,thestudentsintheparisongroupshowedverylittleuanding。Themainmeismbehindthisdifferenatwasthefrequerastsbetweeideasofthesamethingialtreatment。Forexample,intheparisongroup,theviewoflightrayswasreifiedas“whatlightprises”。Intrast,igroup,lightrayswereceivedasanauxiliarytoolinmodernsce,asaresultgontologicalclaimsofhistoricalmodels。
Myiionisthusthattheimportantfunoftheintroduofalterions;in;orofthestudents'ownnaiveviews,judgedtbytsce;isthatthosealteriohesjudgedrightbytscevisible。Withoutatrast,allstudentsdoislearnthe“whole”,oftehisdoeshemfnovelproblemsinpowerfulwaysiure。Forexample,thenotionofanauxiliarytooldoesnothavemeaningwithoutaethingthatisnotanauxiliarytool,suchastheontologicallymuch“heavier”reifiedviewof“lightray”。
Learningabouttheantiquevieossibleforthelearouhemoderbecausethetwoaresimilar,butbecausetheyaredifferent。Althoughthetwoviewsareviewsofthesamethiive(tradoesnotderivefrwhatissame,butfrwhatisdifferent。Mysuggestionisthatlearningabouttheahenlearningaboutthemodernviewismoreducivetthenlearningaboutthemoderhisshouldbetrue,atleastiflearningismeasuredihelearner'sdistofcriticaldiffereweeahephenomeion(e。g。,fordmhtrays)。
&ualLearning
&uallearningasanacademicspecializatioablishedbyEleanibson。In1955shepublishedahighlyiiPsychologicalReview,“PerceptualLeario?”,coauthoredbyherhusband,JamesJ。Gibsohuedthattherearetwoschperceptuallearning。Agtotheeschool,wereceivescarce,impoverishedinformationfromthee,whichmustbeaddedtoandenriched。Agtothedifferentiationschool,wereuatiohatwehavetodifferentiateorselesequeoperceiveamouofindthedifferearemostcritirelatioals。J。J。GibsonandGibson(1955)demolearningtokhing(inthesenseofbei)isamatterhowitdiffersfrs(i。e。,beiodistherespewhichitdiffersfrs)。
TheecologicalapproachtoperceptuallearningedbyEleanibsonbelohedifferentiationsherbookwithAnneDicludedtheGestaltistsinthesamecamp,whereasthebehavioristsanditivistswerelistedutheories(E。J。Gibson&Dick,2000)。