Taken straight from the Merriam-Webster dictionary
Don't know if this explains it like you had in mind though!
Main Entry: ob·jec·tiv·ism
Pronunciation: &b-'jek-ti-"vi-z&m, äb-
Function: noun
Date: 1854
1 : any of various theories asserting the validity of objective phenomena over subjective experience; especially : REALISM 2a
2 : an ethical theory that moral good is objectively real or that moral precepts are objectively valid
3 : a 20th century movement in poetry growing out of imagism and putting stress on form
- ob·jec·tiv·ist /-vist/ adjective or noun
- ob·jec·tiv·is·tic /-"jek-ti-'vis-tik/ adjective