sensationism

[sen-sey-shuh-niz-uh m] /sɛnˈseɪ ʃəˌnɪz əm/
noun
1.
a theory of psychology maintaining that experience consists solely of sensations.
Also, sensationalism.
Origin
1860-65; sensation + -ism
Related forms
sensationist, noun, adjective
sensationistic, adjective