Peoplewithbiggerbrainsftendtoscorehigheronstandardizedtestsofintelligence，accordingtonewstudyfindings.However，thestudyauthorDrMichaelA.McDanieloftheVirginiaCommonwealthUniversityinRichmondemphasizedthat

Peoplewithbiggerbrainsftendtoscorehigheronstandardizedtestsofintelligence，accordingtonewstudyfindings.

However，thestudyauthorDrMichaelA.McDanieloftheVirginiaCommonwealthUniversityinRichmondemphasizedthatthesefindingsrepresentageneraltrend，andpeoplewithsmallheadsshouldnotautomaticallybelievetheyarelessintelligent.Forinstance，AlbertEinstein’sbrainwas“notparticularlylarge”，McDanielnoted.“There’ssomerelationshipbetweenbrainsizeandintelligenceontheaverage，butthere’splentyofroomforexceptions，”hesaid.

Interestintherelationshipbetweenbrainsizeandintelligencegrewinthe1830s， whenGermananatomist(解剖学家)FrederichTiedmannwrotethathebelievedtherewas“anunquestionableconnectionbetweenthesizeofthebrainandthementalenergydisplayedbytheindividualman”.Sincethatstatement，scientistshaveconductednumerousstudiestodetermineifTiedmann’s assertionwas，infact，correct.Moststudieshavelookedintothelinkbetweenheadsizeandintelligence.Morerecently，however，researchershavepublishedadditionalstudiesonbrainsizeandintelligence，measuredusingMRIscan(核磁共振成像扫描).

Forhisstudy，McDanielanalyzedmorethan20studiesthatlookedintotherelationshipbetweenbrainsizeandintelligenceinatotalof1530people.Thestudiesshowedthatontheaverage，peoplewithlargerbrainvolumetendedtobemoreintelligent.Therelationshipbetweenbrainvolumeandintelligencewasstrongerinwomenthanmen，andinadultsthaninchildren.McDanielnotesinthejournalIntelligence.

McDanielisnotsurewhytherelationshipwasstrongerforadultsandwomen.“Otherresearchhasshownthatwomen，ontheaverage，tendtohavesmallerbrainsthanmen，butscorejustaswell—ifnothigher—intestsofintelligence，”hesaid.

McDanielinsistedthattherelationshipbetweenbrainsizeandintelligenceisnota“perfect”one.“Onecancertainlyfindlotsofexamplesofsmaller-sizedpeoplewhoarehighlyintelligent，”hesaid，“But，ontheaverage，therelationshipholds.”

1..Whatdoesthetextmainlytalkabout？

A.MRIscansareappliedtointelligence.

B.Ontheaverage，abiggerbrainmeanshigherIQ.

C.D