This -ism of assessing ideas by their practical consequences is the title of a William James work
We are... [DOC] [TLE] William James | Pursuit of Happiness | Happiness is understandable ... [PAR] William James (1842-1910) was a leading philosopher and psychologist at the 
turn ... which holds that the meaning of an idea is to be sought in its practical 
effects, that ... action, and that truth is to be tested by the practical consequences 
of belief.