▁shapes ▁as ▁a ▁result ▁of ▁external ▁circumstances ▁such ▁as ▁stress . ▁Jo el ▁concluded ▁from ▁the ▁results ▁of ▁this ▁study ▁and ▁other ▁studies ▁she ▁exam ined ▁that ▁if ▁under ▁pressure ▁certain ▁areas ▁of ▁the ▁brain ▁can ▁turn ▁from ▁their ▁typical ▁" f em ale ▁form " ▁to ▁the ▁typical ▁" male ▁form " ▁– ▁there ▁is ▁no ▁point ▁in ▁talking ▁about ▁a ▁female ▁brain ▁and ▁a ▁male ▁brain , ▁and ▁that ▁this ▁division ▁is ▁meaning less . ▁ ▁According ▁to ▁Jo el , ▁the ▁brain ▁has ▁no ▁sex , ▁and ▁the ▁differences ▁between ▁" f em ale " ▁and ▁" male " ▁bra ins , ▁though ▁they ▁exist , ▁are ▁minor ▁and ▁un related ▁to ▁each ▁other . ▁She ▁was ▁the ▁first ▁to ▁talk ▁about ▁correlation ▁in ▁the ▁context ▁of ▁the ▁brain : ▁a ▁particular ▁area ▁of ▁the ▁brain , ▁such ▁as ▁a ▁large ▁am yg d ala , ▁does ▁not ▁predict ▁anything ▁about ▁a ▁different ▁part ▁of ▁the ▁brain , ▁say , ▁a ▁small ▁hi pp oc amp us . ▁Although ▁there ▁are ▁differences ▁in ▁the ▁brain ▁between ▁males ▁and ▁females , ▁they ▁are ▁not ▁organized . ▁Thus , ▁if ▁a ▁" male " ▁characteristic ▁is ▁found ▁in ▁a ▁particular ▁area , ▁it ▁does ▁not ▁actually ▁mean ▁anything ▁about ▁the ▁mascul inity ▁or ▁femin inity ▁of ▁the ▁other ▁brain ▁characteristics , ▁which ▁are ▁determined ▁by ▁the ▁complex ▁interactions ▁between ▁sex , ▁gen et ics ▁and ▁the ▁environment . ▁ ▁Jo el ' s ▁conclus ions ▁have ▁been ▁challeng ed ▁by ▁others ▁in