▁the ▁polic ym akers ' ▁intention . ▁ ▁Sex ual ▁us ages ▁ ▁Fre ud ▁on ▁the ▁role ▁of ▁per version ▁Fre ud ' s ▁did actic ▁strategy ▁in ▁his ▁Three ▁Ess ays ▁on ▁the ▁Theory ▁of ▁Sex ual ity ▁was ▁to ▁construct ▁a ▁bridge ▁between ▁the ▁" per versions " ▁and ▁" normal " ▁sexual ity . ▁C lin ically ▁expl oring ▁" a ▁rich ly ▁divers ified ▁collection ▁of ▁er otic ▁end ow ments ▁and ▁incl in ations : ▁herm aph rod it ism , ▁ped oph ilia , ▁sod omy , ▁fet ish ism , ▁exhibition ism , ▁sad ism , ▁mas och ism , ▁cop roph ilia , ▁ne c roph ilia " ▁among ▁them , ▁Fre ud ▁concluded ▁that ▁" all ▁humans ▁are ▁inn ately ▁per verse ". ▁He ▁found ▁the ▁roots ▁of ▁such ▁per versions ▁in ▁infant ile ▁sexual ity — in ▁' the ▁child ' s ▁" pol ym orph ously ▁per verse " ▁incl in ations ▁... ▁the ▁" apt itude " ▁for ▁such ▁per vers ity ▁is ▁inn ate '. ▁The ▁' c ru cial ▁ir ony ▁of ▁Fre ud ' s ▁account ▁in ▁the ▁Three ▁Ess ays ▁was ▁that ▁per version ▁in ▁child hood ▁was ▁the ▁norm '. ▁Ref ining ▁his ▁analysis ▁a ▁de cade ▁later , ▁Fre ud ▁str essed ▁that ▁while ▁child hood ▁sexual ity ▁involved ▁a ▁wide ▁and ▁unf oc used ▁range ▁of ▁per verse ▁activities , ▁by ▁contrast ▁with ▁adult ▁per version ▁there ▁was ▁' an ▁important ▁difference ▁between