Peoplewithbiggerbrainstendtoscorehigheronstandardizedtestsofintelligence,accordingtonewstudyfindings.

However,Dr.MichaelA.McDanielemphasizedthatthesefindingsrepresentageneraltrend,andpeoplewithsmallheadsshouldnotautomaticallybelievetheyarelessintelligent.Forinstance,AlbertEinstein’sbrainwas“notparticularlylarge,”McDanielnoted“There’ssomerelationshipbetweenbrainsizeandintelligenceonaverage,butthere’splentyofroomforexceptions,”hesaid.

Interestintherelationshipbetweenbrainsizeandintelligencegrewinthe1830s,whenGermananantomist(解剖学家)FrederickTidemannwrotethathebelievedtherewas“anaturalconnectionbetweenthesizeofthebrainandthementalenergydisplayedbytheindividualman.”Sincethatstatement,scientistshaveconductednumerousstudiestodetermineifTidemann’sideawas,infact,correct.Moststudieshaveinvestigatedthelinkbetweenheadsizeandintelligence.Morerecently,however,researchershavepublishedadditionalstudiesonintelligenceandbrainsize,measureusingMRIscans.

Forhisstudy,McDanielanalyzedmorethan20studiesthatinvestigatedtherelationshipbetweenbrainsizeandintelligenceinatotalof1,530people.Thestudiesshowedthatonaverage,peoplewithlargerbrainvolumetendedtobemoreintelligent.Therelationshipwasstrongerinwomenthatmen,andadultsthanchildren,McDanielnoted.

Inaninterview,McDanielnotedthathe’snotsurewhytherelationshipwasstrongerforadultsandwomen.Previousresearchhasshownthatwomen,onaverage,tendtohavesmallerbrainsthatmen,butscorejustaswell---ifnothigher---intestsofintelligencehesaid.

McDanielinsistedthattherelationshipbetweenbrainsizeandintelligenceisnota“perfect”one.“Onecancertainlyfindlotsofexamplesofsmaller-brainedpeoplewhoarehighlyintelligent,”hesaid”But,onaverage,therelationshipholds.”

73．Whatdoesthepassagemainlytellus?

A．ThesuccessofusingMRIscansforstudiesonman’sintelligence.

B．OnaveragebiggerbrainsmeanhigherIQ.

C．Theimportanceofourbrainvolume.

D．Dr.Michaelsucceededinhisstudiesonman’sintelligence.

74．BymentioningAlbertEinstein,thewriterw