situationism
[ sich-oo-ey-shuh-niz-uh m ]
/ ˌsɪtʃ uˈeɪ ʃəˌnɪz əm /
noun Psychology.
the theory that behavior is chiefly response to immediate situations.
Also
sit·u·a·tion·al·ism
[sich-oo-ey-shuh-nl-iz-uh m] /ˌsɪtʃ uˈeɪ ʃə nlˌɪz əm/.