"Years ago, one of my mates actually underwent the "free personality test" that the Scientologists on Tottenham Court Road in London offered to passers-by.
They told him that he was guillible, and easily led.
But that they could help him with that."
I once did one of those, my only excuse being that I was bored and in Birmingham at the time. After a few minutes of their test the pod person running it was looking very uncomfortable - every single question was trying to lead me to an obvious answer, and every single time I pushed back with an honest but non-conforming response. The pod person seemed very relieved when I left - for some reason they didn't try to offer me anything.