▁in ▁the ▁Tal pi ot ▁program , ▁which ▁she ▁left ▁after ▁a ▁year ▁and ▁a ▁half . ▁After ▁comple ting ▁her ▁military ▁service , ▁Jo el ▁en rolled ▁in ▁the ▁Tel ▁Av iv ▁University ▁program ▁for ▁out standing ▁students . ▁She ▁completed ▁a ▁b ach elor ' s ▁degree ▁in ▁medical ▁science , ▁followed ▁by ▁a ▁doctor ate ▁in ▁psych obi ology ▁( 1 9 9 8 ), ▁which ▁focused ▁on ▁how ▁connections ▁in ▁the ▁brain ▁are ▁organized . ▁She ▁then ▁joined ▁the ▁fac ulty ▁of ▁neu ros cience , ▁after ▁receiving ▁an ▁Al on ▁fellow ship ▁for ▁young ▁Isra eli ▁scient ists . ▁Her ▁main ▁area ▁of ▁research ▁for ▁ 1 5 ▁years ▁was ▁the ▁c ere br al ▁mechan isms ▁of ▁obs ess ive - comp uls ive ▁dis order ▁( O CD ). ▁ ▁One ▁of ▁the ▁main ▁questions ▁in ▁Jo el ' s ▁research ▁is ▁whether ▁there ▁is ▁a ▁" male ▁brain " ▁and ▁a ▁" f em ale ▁brain "; ▁whether ▁human ▁bra ins ▁can ▁be ▁divided ▁in ▁a ▁binary ▁way , ▁as ▁is ▁generally ▁done ▁with ▁human ▁gen it als . ▁According ▁to ▁Jo el j ' s ▁research , ▁the ▁answer ▁is ▁" no ". ▁ ▁One ▁of ▁the ▁most ▁important ▁studies ▁on ▁which ▁Jo el ' s ▁theory ▁is ▁based ▁was ▁done ▁by ▁ph arm ac ologist ▁Margaret ▁Mc Car thy ▁from ▁the ▁University ▁of ▁Maryland . ▁Mc Car thy ▁found ▁that ▁characteristics ▁in ▁male ▁and ▁female ▁animal ▁bra ins ▁can ▁cause ▁changes ▁in ▁their