▁who ▁have ▁reached ▁the ▁same ▁level ▁of ▁aw aren ess , ▁since ▁cross - check ing ▁these ▁different ▁groups ' ▁impress ions ▁makes ▁it ▁possible ▁to ▁arrive ▁at ▁more ▁objective ▁conclus ions . The ▁dé rive ' s ▁goals ▁include ▁studying ▁the ▁terrain ▁of ▁the ▁city ▁( ps ych oge ography ) ▁and ▁emot ional ▁dis orientation , ▁both ▁of ▁which ▁lead ▁to ▁the ▁potential ▁creation ▁of ▁Situ ations . ▁ ▁History ▁ ▁The ▁concept ▁of ▁the ▁dé rive ▁has ▁its ▁orig ins ▁in ▁the ▁Let ter ist ▁International , ▁an ▁avant - gar de ▁and ▁Marx ist ▁collect ive ▁based ▁in ▁Paris . ▁The ▁dé rive ▁was ▁a ▁critical ▁tool ▁for ▁understanding ▁and ▁developing ▁the ▁theory ▁of ▁psych oge ography , ▁defined ▁as ▁the ▁" specific ▁effects ▁of ▁the ▁ge ographical ▁environment ▁( wh ether ▁cons ci ously ▁organized ▁or ▁not ) ▁on ▁the ▁emot ions ▁and ▁behavior ▁of ▁individuals ." ▁ ▁The ▁dé rive ▁continued ▁to ▁be ▁a ▁critical ▁concept ▁in ▁the ▁theories ▁of ▁the ▁Situ ation ist ▁International , ▁a ▁radical ▁group ▁of ▁avant - gar de ▁artists ▁and ▁political ▁the or ists ▁that ▁was ▁formed ▁out ▁of ▁the ▁Let ter ist ▁International , ▁Co Br A , ▁and ▁the ▁International ▁Mov ement ▁for ▁an ▁Im agin ist ▁Bau haus ▁in ▁the ▁ 1 9 5 0 s . ▁For ▁the ▁Situ ation ists , ▁the ▁dé rive ▁was ▁a ▁revolution ary ▁technique ▁to ▁combat ▁the ▁m ala ise ▁and ▁b ored om ▁of ▁the ▁society ▁of ▁the ▁spect acle