[@Gentlemanvaultboy]
Schizophrenia or other cases of fractured personality. Internal conflicts. Doublethinking, maybe. A person who is easily swayed in their opinions or isn't confident in themselves might produce a stand that is more free-willed and independent, whilst driven and purposeful individuals have their stands slaved to themselves completely and utterly.
OR MAYBE NOT.
Araki knows. But he will not share his secrets with the mortal men.