Answer:
Pragmatism.
Step-by-step explanation:
William James advocated the theory of pragmatism. It is an approach of measuring truth and validity through experiment and practical results.
One of the examples of pragmatism would be measuring a person by his/her actions and not by his/her faith and ideology. William James supported this practice of pragmatism concerning with religion.
He helped in understanding why truth should be measured according to the impact it makes on human behavior.