▁in ▁ 1 9 2 7 ▁and ▁then ▁continued ▁to ▁study ▁medicine ▁at ▁the ▁University ▁of ▁Berlin , ▁where ▁he ▁acquired ▁his ▁first ▁degree ▁in ▁medicine ▁in ▁ 1 9 3 3 . ▁In ▁ 1 9 3 4 ▁Ne umann ▁and ▁his ▁wife ▁Julia , ▁who ▁had ▁been ▁Z ion ists ▁since ▁they ▁were ▁te en agers , ▁moved ▁to ▁Tel ▁Av iv . ▁For ▁many ▁years , ▁he ▁regularly ▁returned ▁to ▁Zürich , ▁Switzerland ▁to ▁give ▁lect ures ▁at ▁the ▁C . ▁G . ▁Jung ▁Institute . ▁ ▁He ▁also ▁lect ured ▁frequently ▁in ▁England , ▁France ▁and ▁the ▁Netherlands , ▁and ▁was ▁a ▁member ▁of ▁the ▁International ▁Association ▁for ▁Anal yt ical ▁Psych ology ▁and ▁president ▁of ▁the ▁Israel ▁Association ▁of ▁Anal yt ical ▁Psych olog ists . ▁He ▁pract iced ▁analyt ical ▁psych ology ▁in ▁Tel ▁Av iv ▁from ▁ 1 9 3 4 ▁until ▁his ▁death ▁from ▁kid ney ▁cancer ▁in ▁ 1 9 6 0 . ▁ ▁Cont ribution s ▁ ▁Ne umann ▁contributed ▁to ▁the ▁field ▁of ▁development al ▁psych ology ▁and ▁the ▁psych ology ▁of ▁conscious ness ▁and ▁cre ativity . ▁ ▁He ▁had ▁a ▁theoretical ▁and ▁philosoph ical ▁approach ▁to ▁analysis , ▁contrast ing ▁with ▁the ▁more ▁clin ical ▁concern ▁in ▁England ▁and ▁the ▁United ▁States . ▁His ▁most ▁valuable ▁contribution ▁to ▁psych ology ▁was ▁the ▁empir ical ▁concept ▁of ▁" cent ro version ", ▁a ▁synth esis ▁of ▁extra - ▁and ▁intro version . ▁However , ▁he ▁is ▁best ▁known ▁for ▁his ▁theory