This isn't Psychoanalysis, that's Psychiactric Diagnosis, or asking questions to figure out what the problem is. What you're talking about is Psychoactive, or Cognitive Conditioning, or "brainwashing." While it is possible, and has been done, there's a lot more we don't know about the mind, how it works, or doesn't than we do. This means it's not so much a linear causual process like "If I do this, that happens" but more like Stimulus Response, which can be unpredictible in normal human interactions.
Let me put it this way,m you know your SO pretty good (Assuming you're in, have been, or at least witnessed a Long Term Relationship.) Now, you come home, say something, and all of a sudden, get a completely incomprehensible reaction. Happens all the time, if not to you to someone you've known or seen, and it's generally as inoccuous as what you want on the Pizza tonight.
Now, let's look at what someone unethical enough to get into Mind Control (Like me, for example) would actually use it for. Personal profit, turncoating, sexual gratification, or Dominance/reassurance. At the relatively easy end of the scale, you can use it to get someone's money, or other valuables. This is you garden variety Mugging. You can try Strong Arm first, if you're big, and intimidating enough, but that's not going to reliably get the goods, eventually you're going to run into a martial artists, veteran, or gun owner, and your career as a Manipulative menace is relatively short lived. This is why they often go for Forced Compliance, which generally boils down to pulling out a gun before asking for their wallet.
That's Entry Level, and it still doesn't always work. Not to mention the fact that there's almost always a safer, and easier way to go about it. You could instead hit them from behind with a baseball bat, and knock them out before releiving them of their wallet, can of mace, Taser, and EDC pistol. That's really the easiest mind manipulation, turn it off by knocking them out, or breaking it by killing them. Ultimate compliance.
For the higher level stuff, it gets progressively more complex. if I could tell you how I talk a woman out of her clothes using just psychoanalysis, subliminal symbolic suggestion, hypnosis, and so forth, I wouldn't be here in a video game forum, I'd probably be halfway over the Atlantic in my private Jet. This is relatively simple compared to the kind of psychic reprogramming it takes to Stockholm, or Patty Hearst kidnap victims, or posthypnotically program a Manchurian style turncoat/assassin.
For those last few, you have to do things that aren't generally available in a Singles bar. You can't Break an attractive woman in public, someone invariably notices, and puts a stop to it. For me, the most reliable system starts with Sensory Deprivation, (Which also throws off Time Scale) separation from reinforcing stimuli (If you're trying to turn a Marine against America, you don't want the Stars, and Stripes visible, nor do you want to try and Break a Christian under a Crucifix.) Torture tends to be counterproductive, because at some point you have to gain Trust. You cannot Hypnotize someone against their will if they don't trust you, and most other techniques (Short of Chemical Interrogation) have similar limitations.
This is the only way to get someone to do something against their intrinsic nature. You have to change the Person you're dealing with, from a Marine into an Anti-american terrorist operative, spy, assassin, or saboteur, for example, they have to cease to BE a marine, because a Marine just wouldn't do that. (They were already broken, depersonalized, and reprogrammed by their DIs.) To turn against Amerca, they have to become Unamerican, wiping out all the 'Merrka Fluff Yeah! they've been raised on before you can overwrite with your propaganda revealing US as the selfish suggestible consumption driven polluters they are.
For obvious reasons, I'm not going into any specifics here, as it constitutes treason, and this isn't a secure account/ISP.
Are you essentially asking if it's possible to hypnotize someone, or to use subliminal messaging in such a way that it changes the person's personality?
