ptember ▁ 2 8 , ▁ 1 9 2 0 ▁- ▁March ▁ 2 4 , ▁ 1 9 7 2 ) ▁was ▁an ▁applied ▁medical ▁anth rop ologist . ▁ ▁His ▁work ▁centered ▁on ▁psych iat ry , ▁and ▁the ▁influence ▁of ▁culture ▁on ▁person ality . ▁ ▁Ca ud ill ▁was ▁especially ▁interested ▁in ▁diagn osis ▁and ▁treatment ▁of ▁mental ▁issues ▁in ▁Japan . ▁ ▁Ca ud ill ▁was ▁the ▁first ▁to ▁identify ▁the ▁field ▁of ▁medical ▁anth rop ology , ▁and ▁was ▁active ▁in ▁organ izing ▁it ▁during ▁its ▁form ative ▁years . ▁ ▁Education ▁and ▁App oint ments ▁Ca ud ill ▁purs ued ▁his ▁gradu ate ▁studies ▁in ▁soci oc ult ural ▁anth rop ology ▁at ▁the ▁University ▁of ▁Chicago . ▁ ▁He ▁received ▁his ▁Ph . D . ▁in ▁ 1 9 5 0 ▁for ▁a ▁dis sert ation ▁entitled ▁Japanese - American ▁Acc ult uration ▁and ▁Person ality . ▁ ▁After ▁comple ting ▁his ▁gradu ate ▁work , ▁Ca ud ill ▁accepted ▁an ▁instruct or ship ▁position ▁at ▁Y ale ▁University , ▁and ▁remained ▁there ▁from ▁ 1 9 5 0 - 1 9 5 2 . ▁ ▁Ca ud ill ▁then ▁went ▁on ▁to ▁accept ▁a ▁fac ulty ▁position ▁with ▁the ▁Department ▁of ▁Social ▁Rel ations ▁at ▁Harvard ▁University ▁from ▁ 1 9 5 2 - 1 9 6 0 . ▁ ▁While ▁at ▁Harvard , ▁Ca ud ill ▁also ▁took ▁an ▁appointment ▁as ▁Research ▁Associ ate ▁with ▁the ▁Department ▁of ▁Psych ology , ▁within ▁Harvard