bagatelle

I'm not sure how to exactly pose this question, because of the terminology. If there's a thread already, could you point me to it.

I've been to other forums and seen many accounts being banned, because they belong to same person. Usually it has happened, when someone is banned and they try to come back and explain.

I have no knowledge of what mods exactly can do, but I know they can trace accounts that have same IP, yet this can also be bypassed, so that staff can't always find out connections.

I would like to know, is there a possibility (or has it happened) that a person does these alternate accounts without knowing about it him/herself? In case of scitzophrenia or some kind of personality disorder?

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