Penis size interacts with body shape and heig

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1、Penissizeinteractswithbodyshapeandheighttoinfluencemaleattractivenessa,1,2bcaBrianS.Mautz,BobB.M.Wong,RichardA.Peters,andMichaelD.JennionsabResearchSchoolofBiology,AustralianNationalUniversity,Canberra,ACT0200,Australia;SchoolofBiologicalSciences,Monas

2、hUniversity,Melbourne,cVIC3800,Australia;andDepartmentofZoology,LaTrobeUniversity,Bundoora,VIC3086,AustraliaEditedbyWyattW.Anderson,UniversityofGeorgia,Athens,GA,andapprovedFebruary28,2013(receivedforreviewNovember6,2012)Compellingevidencefrommanyanim

3、altaxaindicatesthatmaleTheuprightbodypostureandprotruding,nonretractablegen-genitaliaareoftenunderpostcopulatorysexualselectionforchar-italiaofmalehumansmakethepenisparticularlyconspicuous,acteristicsthatincreaseamale’srelativefertilizationsuccess.The

4、reevenwhenflaccid.Thisobservationhasgeneratedsuggestionsbycould,however,alsobedirectprecopulatoryfemalematechoiceevolutionarybiologiststhatthecomparativelylargehumanpenisbasedonmalegenitaltraits.Beforeclothing,thenonretractableevolvedunderprematingsexu

5、alselection(19,20).Furthermore,humanpeniswouldhavebeenconspicuoustopotentialmates.Thisnovels,magazines,andpopulararticlesoftenalludetotheexis-observationhasgeneratedsuggestionsthathumanpenissizetenceofarelationshipbetweenpenissizeandsexualattractive-p

6、artlyevolvedbecauseoffemalechoice.Hereweshow,baseduponnessormasculinity(21,22).Manycultureshavefashionitems,femaleassessmentofdigitallyprojectedlife-size,computer-generatedlikepenissheathsandcodpieces,thatdrawattentiontowardmaleimages,thatpenissizeint

7、eractswithbodyshapeandheighttogenitalia(20),highlightingthepotentialforfemalechoicetodeterminemalesexualattractiveness.Positivelinearselectionwasinfluencetheevolutionofmalegenitalia.Therearenumerousdetectedforpenissize,butthemarginalincreaseinattractiv

8、enesspsychologicalstudiesdirectlyaskingfemalesfortheirpreferenceeventuallydeclinedwithgreaterpenissize(i.e.,quadraticselection).regardingmalepenissize.Theresultsaremixed,withstudiesPenissizehadastrongereffectonattractivenessintallermenthanfindi