Are 二分之一and 零点五represented in the same way

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1、ActaPsychologica142(2013)299–307ContentslistsavailableatSciVerseScienceDirectActaPsychologicajournalhomepage:www.elsevier.com/locate/actpsyAre1/2and0.5representedinthesameway?☆DanaGanor-Stern⁎AchvaAcademicCollege,IsraelarticleinfoabstractArticlehistory:Adults'processingo

2、funitanddecimalfractionswasinvestigatedusingthenumericalcomparisontask.WhenReceived19November2012unitfractionswerecomparedtointegers,thepatternofdistanceeffectfoundsuggeststhattheywereper-Receivedinrevisedform1January2013ceivedtobeonthesamementalnumberlineasintegers;howe

3、ver,theirrepresentationwasundifferentiated,Accepted9January2013astheywereperceivedtohavethesamemagnitude.Thiswasfoundbothwithsimultaneousandwithse-Availableonline16February2013quentialpresentation.Whendecimalfractionswerecomparedtointegers,thepatternofresultssuggeststhat

4、theywerealsorepresentedonthesamementalnumberlinewithintegers,buttheirrepresentationPsycINFOclassification:2340wasdifferentiated.Possibleexplanationsforthedifferentpatternsfoundforunitanddecimalfractionsarediscussed.Moreover,compatibilitybetweenthemagnitudeofthewholefracti

5、onandthatofitscomponentsKeywords:relativetothecomparedintegeraffectedperformanceinthecaseofdecimalfractionsandunitfractionsNumericalprocessingpresentedsimultaneously,butnotinthecaseofunitfractionspresentedsequentially.ThissuggeststhatFractionssequentialprocessingreducest

6、hecomponentsrepresentationoffractionsandthewholenumberbias.Decimalfractions©2013ElsevierB.V.Allrightsreserved.Mentalnumberline1.Introductionbecause2issmallerthan8(e.g.,Behr,Harel,Post,&Lesh,1992;Post,Wachsmuth,Lesh,&Behr,1985).ThiswholenumberbiasisviewedAlthoughmoststudi

7、esinthefieldofnumericalcognitionhavefo-asanobstacleforlearningfractions,andasbeingresponsibleatleastcusedontheprocessingofintegers,recentlyresearchershavestartedinpartforthepoorperformanceofchildrenintasksrequiringfractionlookingattheprocessingoffractions.Thistopicisofspe

8、cialinterestprocessing(Hartnett&Gelman,1998;Ni&Zhou,2005).sinceithasbeenshownthatcompetencewithfraction