Merelybasedontheunsoundreasoning,theauthorhastilymakesseveralthefallaciousandabsurdconclusionsthatinstimulatingsituations,firstbornmonkeysproduceuptotwiceasmuchofthehormonecortisolasdotheiryoungersiblings,andhumanalsoproducerelativelyhighlevelcortisolinstimulatingsituations.Andauthoralsomistakenlyagreestheresultofstudythatduringpregnancy,first-timemothermonkeyshavehigherlevelofcortisolthanthosewhoalreadyhaveseveraloffspring.Theauthormakessuchflawsascauseandeffect,falseanalogy,insufficientinvestigationandanalyses.Intheargument,theauthorpresentstheconclusionfromarecentstudyofmonkeys;howeverthestudymayproveinsufficientandevenincorrecttotheresult.Tobeginwith,thesampleof18monkeysisinadequateandisnotrepresentativeenough.Thenumberofthesamplesusuallyinfluencestheaccuracyoftheconsequence.Tomakethestudymorereliable,theresearchersshouldinvestigateintomoremonkeysconcerningtheresult.Intermsoftheconclusion,itissaidinthestatementthatthefirst-bornmonkeyproducesmorecortisolinstimulatingmonkeys.Neverthelessthestimulatingsituationmaybeincorrectlydefinedinthestudy.Inresearchers’opinion,encounteringwithanunfamiliarmonkeyshouldbeastimulus;however,asfarasanimalsareconcerned,theymayhavedifferentideas.Theauthorshouldmakeastimulusmorecarefullysoastomaketheconclusionmoreplausible.Otherwise,wecannotgetthatarbitraryresult.Andalso,thewayoftestingthelevelofcortisol,needsmoreattentiononit.Withoutpresentingthemethod,wecannotconvincetheresearchismadeintherightway.So,moredetailsarerequiredinordertoguaranteethecreditoftheresearch.Inaddition,thereisasevereweaknessofanalogyofthestudy.Itisconcludedthathumanhaveshigherlevelofcortisol,byresearchingintoseveralmonkey.Thehumanandmonkeyaredifferentkindsoffeatures,itisnotlogicaltodrawtheconclusiononfeaturefromtheresearchofanother.Inordertoknowabouthuman,moresurveyonpeoplebeingsshouldbemade.Andevensowithoutsufficientsamples,westillcannotbelieveintheresult.Furthermore,anotherfallaciousconsequenceismadeinthefindingthatduringpregnancy,firsttimemotherhadhigherle